diff --git a/src/komodo_gateway.h b/src/komodo_gateway.h
index 8e9af6a04..84ce254f3 100644
--- a/src/komodo_gateway.h
+++ b/src/komodo_gateway.h
@@ -1430,7 +1430,7 @@ void komodo_passport_iteration()
                             printf("from.(%s) lastpos[%s] %ld isrt.%d\n",ASSETCHAINS_SYMBOL,CURRENCIES[baseid],lastpos[baseid],komodo_isrealtime(&ht));
                     } //else fprintf(stderr,"%s.%ld ",CURRENCIES[baseid],ftell(fp));
                     fclose(fp);
-                } else printf("error.(%s) %p\n",fname,sp);
+                } //else printf("error.(%s) %p\n",fname,sp);
                 komodo_statefname(fname,baseid<32?base:(char *)"",(char *)"realtime");
                 if ( (fp= fopen(fname,"rb")) != 0 )
                 {
diff --git a/src/main.cpp b/src/main.cpp
index 2233faed8..627722907 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -716,7 +716,7 @@ int32_t komodo_validate_interest(const CTransaction& tx)
         {
             static uint32_t counter0;
             prevblocktime = chainActive.Tip()->nTime;
-            if ( counter0++ < 100 )
+            if ( counter0++ < 3 )
                 fprintf(stderr,"error getting prevblocktime, set to tiptime.%u\n",prevblocktime);
         }
         if ( (int64_t)tx.nLockTime < prevblocktime-3600 )
@@ -738,16 +738,15 @@ bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime,int
     int32_t i;
     if (tx.nLockTime == 0)
         return true;
-    if ( ASSETCHAINS_SYMBOL[0] == 0 && flags == STANDARD_LOCKTIME_VERIFY_FLAGS && (int64_t)tx.nLockTime >= LOCKTIME_THRESHOLD )//&& (int64_t)tx.nLockTime < nBlockTime-3600 )
+    if ( ASSETCHAINS_SYMBOL[0] == 0 && flags == STANDARD_LOCKTIME_VERIFY_FLAGS && (int64_t)tx.nLockTime >= LOCKTIME_THRESHOLD && (int64_t)tx.nLockTime < nBlockTime-3600 )
     {
-        if ( komodo_validate_interest(tx) < 0 )
-            return(false);
-        /*
-        if ( nBlockTime >= 1490159171 ) // 246748
+        //if ( komodo_validate_interest(tx) < 0 )
+        //    return(false);
+        if ( nBlockTime >= 1490159171 || nBlockHeight > 246748 ) // 246748
         {
             fprintf(stderr,"[%d] IsFinalTx reject.%d locktime %u vs nBlockTime %u\n",(int32_t)(tx.nLockTime-nBlockTime),(int32_t)nBlockHeight,tx.nLockTime,(uint32_t)nBlockTime);
             return(false); // need to prevent pastdating tx
-        } else fprintf(stderr,"IsFinalTx grandfather.%d locktime %u vs nBlockTime %u\n",(int32_t)nBlockHeight,tx.nLockTime,(uint32_t)nBlockTime);*/
+        } else fprintf(stderr,"IsFinalTx grandfather.%d locktime %u vs nBlockTime %u\n",(int32_t)nBlockHeight,tx.nLockTime,(uint32_t)nBlockTime);
     }
     if ((int64_t)tx.nLockTime < ((int64_t)tx.nLockTime < LOCKTIME_THRESHOLD ? (int64_t)nBlockHeight : nBlockTime))
         return true;
@@ -899,8 +898,8 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state,libzcash::
     static uint256 array[15]; int32_t j,k,n;
     if ( *(int32_t *)&array[0] == 0 )
         komodo_bannedset(array,(int32_t)(sizeof(array)/sizeof(*array)));
-    //if ( komodo_validate_interest(tx) < 0 )
-    //    return(false);
+    if ( komodo_validate_interest(tx) < 0 )
+        return(false);
     n = tx.vin.size();
     for (j=0; j<n; j++)
     {
@@ -1137,6 +1136,11 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
     if (pfMissingInputs)
         *pfMissingInputs = false;
     auto verifier = libzcash::ProofVerifier::Strict();
+    if ( komodo_validate_interest(tx) < 0 )
+    {
+        fprintf(stderr,"komodo_validate_interest failure\n");
+        return error("AcceptToMemoryPool: komodo_validate_interest failed");
+    }
     if (!CheckTransaction(tx, state, verifier))
     {
         fprintf(stderr,"accept failure.0\n");
@@ -3316,7 +3320,7 @@ bool ContextualCheckBlock(const CBlock& block, CValidationState& state, CBlockIn
         int64_t nLockTimeCutoff = (nLockTimeFlags & LOCKTIME_MEDIAN_TIME_PAST)
                                 ? pindexPrev->GetMedianTimePast()
                                 : block.GetBlockTime();
-        if (!IsFinalTx(tx, nHeight, nLockTimeCutoff,STANDARD_LOCKTIME_VERIFY_FLAGS)) {
+        if (!IsFinalTx(tx, nHeight, nLockTimeCutoff,0*STANDARD_LOCKTIME_VERIFY_FLAGS)) {
             return state.DoS(10, error("%s: contains a non-final transaction", __func__), REJECT_INVALID, "bad-txns-nonfinal");
         }
     }
diff --git a/src/miner.cpp b/src/miner.cpp
index ad671896d..ab95c4aa6 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -846,7 +846,7 @@ void static BitcoinMiner(CWallet *pwallet)
                 }
                 if ((UintToArith256(pblock->nNonce) & 0xffff) == 0xffff)
                 {
-                    if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
+                    //if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
                         fprintf(stderr,"0xffff, break\n");
                     break;
                 }