diff --git a/lib/bcoin/fullnode.js b/lib/bcoin/fullnode.js
index 3b686159..333bdc61 100644
--- a/lib/bcoin/fullnode.js
+++ b/lib/bcoin/fullnode.js
@@ -170,6 +170,8 @@ Fullnode.prototype._init = function _init() {
   });
 
   this.chain.on('add block', function(block) {
+    if (!self.chain.isFull())
+      return;
     self.mempool.addBlock(block, function(err) {
       if (err)
         self.emit('error', err);
@@ -177,11 +179,15 @@ Fullnode.prototype._init = function _init() {
   });
 
   this.chain.on('remove block', function(block) {
-    self.mempool.removeBlock(block, function(err) {
+    self.walletdb.removeBlock(block, function(err) {
       if (err)
         self.emit('error', err);
     });
-    self.walletdb.removeBlock(block, function(err) {
+
+    if (!self.chain.isFull())
+      return;
+
+    self.mempool.removeBlock(block, function(err) {
       if (err)
         self.emit('error', err);
     });
diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index b0379766..1c0f102f 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -229,7 +229,8 @@ Mempool.prototype.addBlock = function addBlock(block, callback, force) {
   callback = utils.wrap(callback, unlock);
   entries = [];
 
-  utils.forEachSerial(block.txs.slice().reverse(), function(tx, next) {
+  utils.forRangeSerial(0, block.txs.length, function(i, next) {
+    var tx = block.txs[block.txs.length - 1 - i];
     var hash = tx.hash('hex');
 
     if (tx.isCoinbase())
@@ -287,10 +288,12 @@ Mempool.prototype.removeBlock = function removeBlock(block, callback, force) {
   callback = utils.wrap(callback, unlock);
 
   utils.forEachSerial(block.txs, function(tx, next) {
+    var hash = tx.hash('hex');
+
     if (tx.isCoinbase())
       return next();
 
-    self.hasTX(tx.hash('hex'), function(err, result) {
+    self.hasTX(hash, function(err, result) {
       if (err)
         return next(err);
 
@@ -902,7 +905,7 @@ Mempool.prototype.addUnchecked = function addUnchecked(entry, callback, force) {
 
 Mempool.prototype.removeUnchecked = function removeUnchecked(entry, limit, callback, force) {
   var self = this;
-  var unlock, rate;
+  var unlock, rate, hash;
 
   unlock = this._lock(removeUnchecked, [entry, limit, callback], force);
 
@@ -911,6 +914,8 @@ Mempool.prototype.removeUnchecked = function removeUnchecked(entry, limit, callb
 
   callback = utils.wrap(callback, unlock);
 
+  hash = entry.tx.hash('hex');
+
   this.fillAllHistory(entry.tx, function(err) {
     if (err)
       return callback(err);
@@ -925,10 +930,10 @@ Mempool.prototype.removeUnchecked = function removeUnchecked(entry, limit, callb
       self.size -= self.memUsage(entry.tx);
       self.total--;
 
-      self.network.fees.removeTX(entry.tx.hash('hex'));
+      self.network.fees.removeTX(hash);
 
       if (limit) {
-        rate = bcoin.tx.getRate(entry.size, entry.fees);
+        rate = bcoin.tx.getRate(entry.sizes, entry.fees);
         rate += self.minReasonableFee;
         if (rate > self.minFeeRate) {
           self.minFeeRate = rate;