diff --git a/qa/rpc-tests/invalidblockrequest.py b/qa/rpc-tests/invalidblockrequest.py
index 5a440378fb35..e8d8930b2cbd 100755
--- a/qa/rpc-tests/invalidblockrequest.py
+++ b/qa/rpc-tests/invalidblockrequest.py
@@ -34,6 +34,7 @@ def run_test(self):
         self.tip = None
         self.block_time = None
         NetworkThread().start() # Start up network handling in another thread
+        sync_masternodes(self.nodes)
         test.run()
 
     def get_tests(self):
diff --git a/qa/rpc-tests/p2p-fullblocktest.py b/qa/rpc-tests/p2p-fullblocktest.py
index 28cc2474f13f..9aa7a9d08e95 100755
--- a/qa/rpc-tests/p2p-fullblocktest.py
+++ b/qa/rpc-tests/p2p-fullblocktest.py
@@ -44,6 +44,7 @@ def run_test(self):
         test = TestManager(self, self.options.tmpdir)
         test.add_all_connections(self.nodes)
         NetworkThread().start() # Start up network handling in another thread
+        sync_masternodes(self.nodes)
         test.run()
 
     def add_transactions_to_block(self, block, tx_list):
diff --git a/qa/rpc-tests/test_framework/util.py b/qa/rpc-tests/test_framework/util.py
index 06c1992bf12d..daf2836e1ee0 100644
--- a/qa/rpc-tests/test_framework/util.py
+++ b/qa/rpc-tests/test_framework/util.py
@@ -55,6 +55,15 @@ def get_rpc_proxy(url, node_number, timeout=None):
 
     return coverage.AuthServiceProxyWrapper(proxy, coverage_logfile)
 
+def get_mnsync_status(node):
+    result = node.mnsync("status")
+    return result['IsSynced']
+
+def wait_to_sync(node):
+    synced = False
+    while not synced:
+        synced = get_mnsync_status(node)
+        time.sleep(0.5)
 
 def p2p_port(n):
     return 11000 + n + os.getpid()%999
@@ -96,6 +105,10 @@ def sync_mempools(rpc_connections, wait=1):
             break
         time.sleep(wait)
 
+def sync_masternodes(rpc_connections):
+    for node in rpc_connections:
+        wait_to_sync(node)
+
 bitcoind_processes = {}
 
 def initialize_datadir(dirname, n):
diff --git a/src/governance-classes.cpp b/src/governance-classes.cpp
index 36595ad94bce..9352ccf150e0 100644
--- a/src/governance-classes.cpp
+++ b/src/governance-classes.cpp
@@ -415,9 +415,10 @@ void CSuperblockManager::CreateSuperblock(CMutableTransaction& txNew, CAmount nF
 
     // CONFIGURE SUPERBLOCK OUTPUTS 
 
+    // Superblock payments are appended to the end of the coinbase vout vector
+
     DBG( cout << "CSuperblockManager::CreateSuperblock Number payments: " << pBlock->CountPayments() << endl; );
 
-    txNew.vout.resize(pBlock->CountPayments());
     for(int i = 0; i < pBlock->CountPayments(); i++)  {
         CGovernancePayment payment;
         DBG( cout << "CSuperblockManager::CreateSuperblock i = " << i << endl; );
@@ -425,8 +426,7 @@ void CSuperblockManager::CreateSuperblock(CMutableTransaction& txNew, CAmount nF
             DBG( cout << "CSuperblockManager::CreateSuperblock Payment found " << endl; );
             // SET COINBASE OUTPUT TO SUPERBLOCK SETTING
 
-            txNew.vout[i].scriptPubKey = payment.script;
-            txNew.vout[i].nValue = payment.nAmount;
+            txNew.vout.push_back(CTxOut(payment.nAmount, payment.script));
 
             // PRINT NICE LOG OUTPUT FOR SUPERBLOCK PAYMENT
 
@@ -590,27 +590,43 @@ bool CSuperblock::IsValid(const CTransaction& txNew)
 
     // CONFIGURE SUPERBLOCK OUTPUTS 
 
-    int nPayments = CountPayments();    
+    int nOutputs = txNew.vout.size();
+    int nPayments = CountPayments();
+    int nMinerPayments = nOutputs - nPayments;
+
+    // We require an exact match (including order) between the expected
+    // superblock payments and the payments actually in the block, after
+    // skipping any initial miner payments.
+
+    if(nMinerPayments<0)  {
+        // This means the block cannot have all the superblock payments
+        // so it is not valid.
+        LogPrintf("CSuperblock::IsValid WARNING: Block invalid: Too few superblock payments");
+        return false;
+    }
+
     for(int i = 0; i < nPayments; i++) {
         CGovernancePayment payment;
-        if(GetPayment(i, payment)) {
-            // SET COINBASE OUTPUT TO SUPERBLOCK SETTING
+        if(!GetPayment(i, payment))  {
+            // This shouldn't happen so log a warning
+            LogPrintf("CSuperblock::IsValid WARNING: Failed to find payment: %d of %d total payments", i, nPayments);
+            continue;
+        }
 
-            if(payment.script == txNew.vout[i].scriptPubKey && payment.nAmount == txNew.vout[i].nValue) {
-                // WE FOUND THE CORRECT SUPERBLOCK OUTPUT!
-            } else {
-                // MISMATCHED SUPERBLOCK OUTPUT!
+        int nVoutIndex = nMinerPayments + i;
 
-                CTxDestination address1;
-                ExtractDestination(payment.script, address1);
-                CBitcoinAddress address2(address1);
+        bool fPaymentMatch = ((payment.script == txNew.vout[nVoutIndex].scriptPubKey) &&
+                              (payment.nAmount == txNew.vout[nVoutIndex].nValue));
 
-                // TODO: PRINT NICE N.N DASH OUTPUT
+        if(!fPaymentMatch)  {
+            // MISMATCHED SUPERBLOCK OUTPUT!
 
-                LogPrintf("SUPERBLOCK: output n %d payment %d to %s\n", i, payment.nAmount, address2.ToString());
+            CTxDestination address1;
+            ExtractDestination(payment.script, address1);
+            CBitcoinAddress address2(address1);
+            LogPrintf("CSuperblock::IsValid WARNING: Block invalid: output n %d payment %d to %s\n", nVoutIndex, payment.nAmount, address2.ToString());
 
-                return false;
-            }
+            return false;
         }
     }
 
diff --git a/src/governance-classes.h b/src/governance-classes.h
index b2d474ae01ae..4579ddf3ffd0 100644
--- a/src/governance-classes.h
+++ b/src/governance-classes.h
@@ -244,7 +244,7 @@ class CSuperblock : public CGovernanceObject
 
     bool GetPayment(int nPaymentIndex, CGovernancePayment& paymentOut) 
     {
-        if(nPaymentIndex >= (int)vecPayments.size()) {
+        if((nPaymentIndex<0) || (nPaymentIndex >= (int)vecPayments.size())) {
             return false;
         }
 
diff --git a/src/masternode-payments.cpp b/src/masternode-payments.cpp
index f3266c8d5a66..940fa769c0d6 100644
--- a/src/masternode-payments.cpp
+++ b/src/masternode-payments.cpp
@@ -72,11 +72,11 @@ bool IsBlockValueValid(const CBlock& block, CAmount nExpectedValue){
 
     bool valueok = (block.vtx[0].GetValueOut() <= nExpectedValue);
 
-    // IF WE'RE NOT SYNCED, WE MAY NOT HAVE SUPERBLOCK DATA, SO RETURN THE USUAL CHECK 
+    // IF WE'RE NOT SYNCED, WE MAY NOT HAVE SUPERBLOCK DATA, SO RETURN TRUE FOR NOW 
 
     if(!masternodeSync.IsSynced()) {
         // IF NOT SYNCED, WE WILL SIMPLY FIND THE LONGEST CHAIN
-        return valueok;
+        return true;
     }
 
     // IF THIS IS A VALID SUPERBLOCK RETURN TRUE SINCE SUPERBLOCKS ARE CHECKED
diff --git a/src/rpcmisc.cpp b/src/rpcmisc.cpp
index 6b89b7f4e8f8..96b851172fda 100644
--- a/src/rpcmisc.cpp
+++ b/src/rpcmisc.cpp
@@ -153,6 +153,7 @@ UniValue mnsync(const UniValue& params, bool fHelp)
         UniValue obj(UniValue::VOBJ);
 
         obj.push_back(Pair("IsBlockchainSynced", masternodeSync.IsBlockchainSynced()));
+        obj.push_back(Pair("IsSynced", masternodeSync.IsSynced()));
         obj.push_back(Pair("CurrentSyncingAssetName", masternodeSync.GetAssetName()));
         obj.push_back(Pair("lastMasternodeList", masternodeSync.lastMasternodeList));
         obj.push_back(Pair("lastMasternodeWinner", masternodeSync.lastMasternodeWinner));