diff --git a/ui/app/components/pending-tx-details.js b/ui/app/components/pending-tx-details.js
index 778651d61..1e6299902 100644
--- a/ui/app/components/pending-tx-details.js
+++ b/ui/app/components/pending-tx-details.js
@@ -253,6 +253,13 @@ PTXP.componentDidUpdate = function (prevProps, prevState) {
       state.gasPrice !== prevState.gasPrice)) {
     log.debug(`recalculating gas since prev state change: ${JSON.stringify({ prevState, state })}`)
     this.calculateGas()
+
+  // Otherwise this was a recalculation,
+  // so we should inform the parent:
+  } else {
+    if (this.props.onTxChange) {
+      this.props.onTxChange(this.gatherParams)
+    }
   }
 }
 
diff --git a/ui/app/conf-tx.js b/ui/app/conf-tx.js
index cd4bef2b9..9741d5f32 100644
--- a/ui/app/conf-tx.js
+++ b/ui/app/conf-tx.js
@@ -104,6 +104,8 @@ ConfirmTxScreen.prototype.render = function () {
           accounts: props.accounts,
           identities: props.identities,
           insufficientBalance: this.checkBalanceAgainstTx(txData),
+          // State actions
+          onTxChange: this.updateTxCache.bind(this),
           // Actions
           buyEth: this.buyEth.bind(this, txParams.from || props.selectedAddress),
           sendTransaction: this.sendTransaction.bind(this, txData),
@@ -159,9 +161,19 @@ ConfirmTxScreen.prototype.buyEth = function (address, event) {
   this.props.dispatch(actions.buyEthView(address))
 }
 
+// Allows the detail view to update the gas calculations,
+// for manual gas controls.
+ConfirmTxScreen.prototype.onTxChange = function (txData) {
+  this.setState({ txData })
+}
+
+// Must default to any local state txData,
+// to allow manual override of gas calculations.
 ConfirmTxScreen.prototype.sendTransaction = function (txData, event) {
   event.stopPropagation()
-  this.props.dispatch(actions.sendTx(txData))
+  const state = this.state || {}
+  const txMeta = state.txData
+  this.props.dispatch(actions.sendTx(txMeta || txData))
 }
 
 ConfirmTxScreen.prototype.cancelTransaction = function (txData, event) {