diff --git a/dex/testing/eth/create-node.sh b/dex/testing/eth/create-node.sh
index 90b115815f..ff19d5d43e 100755
--- a/dex/testing/eth/create-node.sh
+++ b/dex/testing/eth/create-node.sh
@@ -84,17 +84,11 @@ ListenAddr = ":${NODE_PORT}"
 NetRestrict = [ "127.0.0.1/8", "::1/128" ]
 EOF
 
-MINING_ARG=""
-
-# Add etherbase if mining.
-if [ "${CHAIN_ADDRESS}" != "_" ]; then
-MINING_ARG="--miner.etherbase 0x${CHAIN_ADDRESS}"
   cat >> "${NODE_DIR}/eth.conf" <<EOF
 
 [Eth.Miner]
 GasCeil = 30000000
 EOF
-fi
 
 # Create a tmux window.
 tmux new-window -t "$TMUX_WIN_ID" -n "${NAME}" "${SHELL}"
@@ -102,10 +96,10 @@ tmux send-keys -t "$TMUX_WIN_ID" "set +o history" C-m
 tmux send-keys -t "$TMUX_WIN_ID" "cd ${NODE_DIR}" C-m
 
 # Create and wait for a node initiated with a predefined genesis json.
-echo "Creating simnet ${NAME} node"
-tmux send-keys -t "$TMUX_WIN_ID" "${NODES_ROOT}/harness-ctl/${NAME} init "\
-	"$GENESIS_JSON_FILE_LOCATION; tmux wait-for -S ${NAME}" C-m
-tmux wait-for "${NAME}"
+#echo "Creating simnet ${NAME} node"
+#tmux send-keys -t "$TMUX_WIN_ID" "${NODES_ROOT}/harness-ctl/${NAME} init "\
+#	"$GENESIS_JSON_FILE_LOCATION; tmux wait-for -S ${NAME}" C-m
+#tmux wait-for "${NAME}"
 
 # Create two accounts. The first is used to mine blocks. The second contains
 # funds.
@@ -127,21 +121,10 @@ $NODE_KEY
 EOF
 
 echo "Starting simnet ${NAME} node"
-if [ "${SYNC_MODE}" = "snap" ]; then
   # Start the eth node with the chain account unlocked, listening restricted to
   # localhost, and our custom configuration file.
   tmux send-keys -t "$TMUX_WIN_ID" "${NODES_ROOT}/harness-ctl/${NAME} " \
 	  "--config ${NODE_DIR}/eth.conf --unlock ${CHAIN_ADDRESS} " \
-	  "--password ${GROUP_DIR}/password --light.serve 25 --datadir.ancient " \
-	  "${NODE_DIR}/geth-ancient --verbosity 5 --vmdebug --http --http.port " \
-	  "${HTTP_PORT} --ws --ws.port ${WS_PORT} --ws.api ${MINING_ARG}" \
-	  "${WS_MODULES} --allow-insecure-unlock --rpc.enabledeprecatedpersonal " \
-	  "2>&1 | tee ${NODE_DIR}/${NAME}.log" C-m
-
-else
-  # Start the eth node listening restricted to localhost and our custom
-  # configuration file.
-  tmux send-keys -t "$TMUX_WIN_ID" "${NODES_ROOT}/harness-ctl/${NAME} --allow-insecure-unlock --rpc.enabledeprecatedpersonal " \
-	  "--config ${NODE_DIR}/eth.conf ${MINING_ARG} --verbosity 5 ${HTTP_OPT} 2>&1 | tee " \
-	  "${NODE_DIR}/${NAME}.log" C-m
-fi
+	  "--password ${GROUP_DIR}/password  --verbosity 5 --vmdebug --http --http.port " \
+	  "${HTTP_PORT} --ws --ws.port ${WS_PORT} --ws.api ${WS_MODULES} --allow-insecure-unlock " \
+	  "--rpc.enabledeprecatedpersonal --dev 2>&1 | tee ${NODE_DIR}/${NAME}.log" C-m
diff --git a/dex/testing/eth/harness.sh b/dex/testing/eth/harness.sh
index 1f1ee3e2f0..7ccf348aad 100755
--- a/dex/testing/eth/harness.sh
+++ b/dex/testing/eth/harness.sh
@@ -24,19 +24,6 @@ ALPHA_HTTP_PORT="38556"
 ALPHA_WS_PORT="38557"
 ALPHA_WS_MODULES="eth"
 
-BETA_ADDRESS="4f8ef3892b65ed7fc356ff473a2ef2ae5ec27a06"
-BETA_ADDRESS_JSON_FILE_NAME="UTC--2021-01-27T08-20-58.179642501Z--4f8ef3892b65ed7fc356ff473a2ef2ae5ec27a06"
-BETA_ADDRESS_JSON='{"address":"4f8ef3892b65ed7fc356ff473a2ef2ae5ec27a06","crypto":{"cipher":"aes-128-ctr","ciphertext":"c5672bb829df9e209ca8ce18dbdd1fed69c603d639e06ab09127b672a609c121","cipherparams":{"iv":"24460eb2934c8b61cee3ad0aa7b843c0"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"1f85da881994ca7b4a23f0698da70500a4b79f97a4450b83b129ebf3b4c28f50"},"mac":"1ecea707f1bffa1f6f944cb47e83118d8179e8a5005b83c88610b7e8692a1197"},"id":"56633762-6fb1-4cbf-8396-3a2e4661f7d4","version":3}'
-BETA_NODE_KEY="0f3f23a0f14202da009bd59a96457098acea901986629e54d5be1eea32fc404a"
-BETA_ENODE="b1d3e358ee5c9b268e911f2cab47bc12d0e65c80a6d2b453fece34facc9ac3caed14aa3bc7578166bb08c5bc9719e5a2267ae14e0b42da393f4d86f6d5829061"
-BETA_NODE_PORT="30305"
-BETA_AUTHRPC_PORT="8553"
-BETA_HTTP_PORT="38558"
-BETA_WS_PORT="38559"
-BETA_WS_MODULES="eth,txpool"
-
-# TODO: Light nodes broken as of geth 1.13.4-stable. Enable them when possible.
-
 # TESTING_ADDRESS is used by the client's internal node.
 TESTING_ADDRESS="946dfaB1AD7caCFeF77dE70ea68819a30acD4577"
 SIMNET_TOKEN_ADDRESS="946dfaB1AD7caCFeF77dE70ea68819a30acD4577"
@@ -56,7 +43,6 @@ if [ -d "${NODES_ROOT}" ]; then
 fi
 
 mkdir -p "${NODES_ROOT}/alpha"
-mkdir -p "${NODES_ROOT}/beta"
 mkdir -p "${NODES_ROOT}/harness-ctl"
 
 echo "Writing ctl scripts"
@@ -64,54 +50,10 @@ echo "Writing ctl scripts"
 # Control Scripts
 ################################################################################
 
-# Write genesis json. ".*Block" fields represent block height where certain
-# protocols take effect. "clique" is our proof of authority scheme. One block
-# can be mined per second with a signature belonging to the address in
-# "extradata". The addresses in the "alloc" field are allocated "balance".
-# Values are in wei. 1*10^18 wei is equal to one eth. Addresses are allocated
-# 11,000 eth. The addresses belong to alpha and beta nodes and two others are
-# used in tests.
-cat > "${NODES_ROOT}/genesis.json" <<EOF
-{
-  "config": {
-    "chainId": 42,
-    "homesteadBlock": 0,
-    "eip150Block": 0,
-    "eip155Block": 0,
-    "eip158Block": 0,
-    "byzantiumBlock": 0,
-    "constantinopleBlock": 0,
-    "petersburgBlock": 0,
-    "istanbulBlock": 0,
-    "muirGlacierBlock": 0,
-    "berlinBlock": 0,
-    "londonBlock": 0,
-    "arrowGlacierBlock": 0,
-    "grayGlacierBlock": 0,
-    "mergeNetSplitBlock": 0,
-    "shanghaiBlock": 0,
-    "cancunBlock": 0,
-    "clique": {
-      "period": 1,
-      "epoch": 30000
-    }
-  },
-  "difficulty": "1",
-  "gasLimit": "30000000",
-  "extradata": "0x00000000000000000000000000000000000000000000000000000000000000009ebba10a6136607688ca4f27fab70e23938cd0270000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
-  "alloc": {
-    "${ALPHA_ADDRESS}": {
-        "balance": "100000000000000000000000000"
-    }
-  }
-}
-EOF
-
 cat > "${NODES_ROOT}/harness-ctl/send.js" <<EOF
-function send(from, to, value) {
-  from = from.startsWith('0x') ? from : '0x' + from
+function send(to, value) {
   to = to.startsWith('0x') ? to : '0x' + to
-  return personal.sendTransaction({ from, to, value, gasPrice: 82000000000 }, "${PASSWORD}")
+  return eth.sendTransaction({ from: eth.accounts[0], to, value})
 }
 EOF
 
@@ -122,24 +64,24 @@ EOF
 chmod +x "${NODES_ROOT}/harness-ctl/sendtoaddress"
 
 cat > "${NODES_ROOT}/harness-ctl/deploy.js" <<EOF
-function deploy(from, contract) {
-  tx = personal.sendTransaction({from:"0x"+from,data:"0x"+contract,gasPrice:82000000000}, "${PASSWORD}")
+function deploy(contract) {
+  tx = eth.sendTransaction({from: eth.accounts[0],data:"0x"+contract})
   return tx;
 }
 
-function deployERC20(from, contract, decimals) {
+function deployERC20(contract, decimals) {
   const hexDecimals = decimals.toString(16);
   const data = "0x" + contract + hexDecimals.padStart(64, "0");
-  tx = personal.sendTransaction({from:"0x"+from,data:data,gasPrice:82000000000}, "${PASSWORD}")
+  tx = eth.sendTransaction({from: eth.accounts[0],data:data})
   return tx;
 }
 
-function deployERC20Swap(from, contract, tokenAddr) {
+function deployERC20Swap(contract, tokenAddr) {
   if (tokenAddr.slice(0, 2) === "0x") {
     tokenAddr = tokenAddr.slice(2)
   }
   var paddedAddr = tokenAddr.padStart(64, "0")
-  tx = personal.sendTransaction({from:"0x"+from,data:"0x"+contract+paddedAddr,gasPrice:82000000000}, "${PASSWORD}")
+  tx = eth.sendTransaction({from:eth.accounts[0],data:"0x"+contract+paddedAddr})
   return tx;
 }
 EOF
@@ -155,74 +97,11 @@ EOF
 HARNESS_DIR=$(dirname "$0")
 cp "${HARNESS_DIR}/create-node.sh" "${NODES_ROOT}/harness-ctl/create-node"
 
-# Reorg script
-cat > "${NODES_ROOT}/harness-ctl/reorg" <<EOF
-#!/usr/bin/env bash
-REORG_NODE="alpha"
-VALID_NODE="beta"
-REORG_DEPTH=2
-
-if [ "\$1" = "beta" ]; then
-  REORG_NODE="beta"
-  VALID_NODE="alpha"
-fi
-
-if [ "\$2" != "" ]; then
-  REORG_DEPTH=\$2
-fi
-
-echo "Before alpha, beta best blocks"
-./alpha attach --exec 'eth.getBlock(eth.blockNumber)'
-./beta attach --exec 'eth.getBlock(eth.blockNumber)'
-
-
-NODES=('alpha' 'beta')
-ENODES=($ALPHA_ENODE $BETA_ENODE)
-PORTS=($ALPHA_NODE_PORT $BETA_NODE_PORT)
-
-echo "Disconnecting nodes"
-for node in "\${NODES[@]}"
-do
-for i in {0..1}
-  do
-    "./\$node" "attach --exec admin.removePeer('enode://\${ENODES[i]}@127.0.0.1:\${PORTS[i]}')"
-  done
-done
-
-sleep 1
-
-# Uncomment to see the effect of reorgs on transactions.
-# "./alpha" "attach --exec personal.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:1,gasPrice:82000000000},\\"${PASSWORD}\\")"
-# "./beta" "attach --exec personal.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:1,gasPrice:82000000000},\\"${PASSWORD}\\")"
-
-"./mine-\$VALID_NODE" \$((REORG_DEPTH + 2))
-"./mine-\$REORG_NODE" \$REORG_DEPTH
-
-sleep 1
-
-echo "Connecting nodes"
-for node in "\${NODES[@]}"
-do
-for i in {0..1}
-  do
-    "./\$node" "attach --exec admin.addPeer('enode://\${ENODES[i]}@127.0.0.1:\${PORTS[i]}')"
-  done
-done
-
-sleep 1
-
-echo "After alpha, beta best blocks"
-./alpha attach --exec 'eth.getBlock(eth.blockNumber)'
-./beta attach --exec 'eth.getBlock(eth.blockNumber)'
-EOF
-chmod +x "${NODES_ROOT}/harness-ctl/reorg"
-
 # Shutdown script
 cat > "${NODES_ROOT}/harness-ctl/quit" <<EOF
 #!/usr/bin/env bash
 tmux send-keys -t $SESSION:5 C-c
 tmux send-keys -t $SESSION:1 C-c
-tmux send-keys -t $SESSION:2 C-c
 tmux kill-session
 EOF
 chmod +x "${NODES_ROOT}/harness-ctl/quit"
@@ -248,32 +127,13 @@ echo "Starting simnet alpha node"
 	"$ALPHA_NODE_KEY" "snap" "$ALPHA_AUTHRPC_PORT" "$ALPHA_HTTP_PORT" "$ALPHA_WS_PORT" \
 	"$ALPHA_WS_MODULES"
 
-echo "Starting simnet beta node"
-"${HARNESS_DIR}/create-node.sh" "$SESSION:2" "beta" "$BETA_NODE_PORT" \
-	"$CHAIN_ADDRESS" "$PASSWORD" "$CHAIN_ADDRESS_JSON" \
-	"$CHAIN_ADDRESS_JSON_FILE_NAME" "$BETA_ADDRESS_JSON" "$BETA_ADDRESS_JSON_FILE_NAME" \
-	"$BETA_NODE_KEY" "snap" "$BETA_AUTHRPC_PORT" "$BETA_HTTP_PORT" "$BETA_WS_PORT" \
-	"$BETA_WS_MODULES"
-
 # Miner
 tmux new-window -t $SESSION:5 -n "miner" $SHELL
 tmux send-keys -t $SESSION:5 "cd ${NODES_ROOT}/harness-ctl" C-m
-tmux send-keys -t $SESSION:5 "watch -n 15 ./mine-alpha 1" C-m
+# tmux send-keys -t $SESSION:5 "watch -n 15 ./mine-alpha 1" C-m
 
 sleep 1
 
-# NOTE: Connecting a node will add for both. Also, light nodes take longer to
-# set up. They will show 0 peers for some amount of time even after adding here.
-echo "Connecting nodes"
-"${NODES_ROOT}/harness-ctl/alpha" "attach --exec admin.addPeer('enode://${BETA_ENODE}@127.0.0.1:$BETA_NODE_PORT')"
-
-echo "Mining some blocks"
-# NOTE: These first couple of blocks will cause a reorg on one node or the
-# other. The reason is unknown. It seems this initial mining and reorg is
-# necessary for nodes to start communicating.
-"${NODES_ROOT}/harness-ctl/mine-beta" "2"
-"${NODES_ROOT}/harness-ctl/mine-alpha" "2"
-
 SEND_AMT=5000000000000000000000
 echo "Sending 5000 eth to beta and testing."
 "${NODES_ROOT}/harness-ctl/alpha" "attach --preload ${NODES_ROOT}/harness-ctl/send.js --exec send(\"${ALPHA_ADDRESS}\",\"${BETA_ADDRESS}\",${SEND_AMT})"
@@ -295,19 +155,7 @@ TEST_USDT_CONTRACT_HASH=$("${NODES_ROOT}/harness-ctl/alpha" "attach --preload ${
 echo "Deploying MultiBalance contract."
 MULTIBALANCE_CONTRACT_HASH=$("${NODES_ROOT}/harness-ctl/alpha" "attach --preload ${NODES_ROOT}/harness-ctl/deploy.js --exec deploy(\"${ALPHA_ADDRESS}\",\"${MULTIBALANCE_BIN}\")" | sed 's/"//g')
 
-mine_pending_txs() {
-  while true
-  do
-    TXSLEN=$("${NODES_ROOT}/harness-ctl/alpha" "attach --exec eth.pendingTransactions.length")
-    if [ "$TXSLEN" -eq 0 ]; then
-      break
-    fi
-    echo "Waiting for transactions to be mined."
-    "${NODES_ROOT}/harness-ctl/mine-alpha" "5"
-  done
-}
-
-mine_pending_txs
+# "${NODES_ROOT}/harness-ctl/mine-alpha" "1"
 
 ETH_SWAP_CONTRACT_ADDR=$("${NODES_ROOT}/harness-ctl/alpha" "attach --preload ${NODES_ROOT}/harness-ctl/contractAddress.js --exec contractAddress(\"${ETH_SWAP_CONTRACT_HASH}\")" | sed 's/"//g')
 echo "ETH SWAP contract address is ${ETH_SWAP_CONTRACT_ADDR}. Saving to ${NODES_ROOT}/eth_swap_contract_address.txt"
@@ -333,8 +181,6 @@ EOF
 echo "Deploying ERC20SwapV0 contract for USDT."
 USDT_SWAP_CONTRACT_HASH=$("${NODES_ROOT}/harness-ctl/alpha" "attach --preload ${NODES_ROOT}/harness-ctl/deploy.js --exec deployERC20Swap(\"${ALPHA_ADDRESS}\",\"${ERC20_SWAP_V0}\",\"${TEST_USDT_CONTRACT_ADDR}\")" | sed 's/"//g')
 
-mine_pending_txs
-
 cat > "${NODES_ROOT}/harness-ctl/loadTestToken.js" <<EOF
     // This ABI comes from running 'solc --abi TestToken.sol'
     const testTokenABI = [{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"airdrop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"testApprove","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
@@ -347,8 +193,6 @@ cat > "${NODES_ROOT}/harness-ctl/loadTestToken.js" <<EOF
         }
     })
     var contract = web3.eth.contract(testTokenABI)
-    web3.eth.defaultAccount = web3.eth.accounts.length > 1 ? web3.eth.accounts[1] : web3.eth.accounts[0]
-    personal.unlockAccount(web3.eth.defaultAccount, '${PASSWORD}')
 
     function transfer (tokenAddr, decimals, addr, val) {
       addr = addr.startsWith('0x') ? addr : '0x'+addr
@@ -395,7 +239,6 @@ EOF
 
 cd "${NODES_ROOT}/harness-ctl"
 
-mine_pending_txs
 
 TEST_BLOCK10_HASH=$("${NODES_ROOT}/harness-ctl/alpha" "attach --exec eth.getHeaderByNumber(10).hash" | sed 's/"//g')
 echo "ETH block 10 hash to use in tests is ${TEST_BLOCK10_HASH}. Saving to ${NODES_ROOT}/test_block10_hash.txt"