diff --git a/src/komodo_bitcoind.h b/src/komodo_bitcoind.h
index 113a470c2..4f6b6e2fc 100644
--- a/src/komodo_bitcoind.h
+++ b/src/komodo_bitcoind.h
@@ -1114,7 +1114,12 @@ uint32_t komodo_stake(int32_t validateflag,arith_uint256 bnTarget,int32_t nHeigh
         pasthash = pindex->GetBlockHash();
         memcpy(hashbuf,&pasthash,sizeof(pasthash));
         memcpy(&hashbuf[sizeof(pasthash)],&addrhash,sizeof(addrhash));
-        vcalc_sha256(0,(uint8_t *)&hash,hashbuf,(int32_t)sizeof(uint256)*2);
+        if ( nHeight >= 2000 )
+        {
+            memcpy(&hashbuf[sizeof(pasthash)+sizeof(addrhash)],&txid,sizeof(txid));
+            memcpy(&hashbuf[sizeof(pasthash)+sizeof(addrhash)+sizeof(txid)],&vout,sizeof(vout));
+            vcalc_sha256(0,(uint8_t *)&hash,hashbuf,(int32_t)sizeof(uint256)*3 + sizeof(vout));
+        } else vcalc_sha256(0,(uint8_t *)&hash,hashbuf,(int32_t)sizeof(uint256)*2);
         //fprintf(stderr,"(%s) vs. (%s) %s %.8f txtime.%u\n",address,destaddr,hash.ToString().c_str(),dstr(value),txtime);
         for (iter=0; iter<3600; iter++)
         {
diff --git a/src/main.cpp b/src/main.cpp
index 8d1649d3b..d4dfae7ae 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1311,7 +1311,7 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
     uint256 hash = tx.GetHash();
     if (pool.exists(hash))
     {
-        fprintf(stderr,"already in mempool\n");
+        //fprintf(stderr,"already in mempool\n");
         return state.Invalid(false, REJECT_DUPLICATE, "already in mempool");
     }
     
diff --git a/src/miner.cpp b/src/miner.cpp
index 755b7439e..dcf22b1bd 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -432,7 +432,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn,int32_t gpucount)
                 pblocktemplate->vTxSigOps.push_back(GetLegacySigOpCount(txStaked));
                 nFees += txfees;
                 pblock->nTime = blocktime;
-                printf("staking PoS ht.%d t%u lag.%u\n",(int32_t)chainActive.Tip()->nHeight+1,blocktime,(uint32_t)(GetAdjustedTime() - (blocktime-13)));
+                //printf("staking PoS ht.%d t%u lag.%u\n",(int32_t)chainActive.Tip()->nHeight+1,blocktime,(uint32_t)(GetAdjustedTime() - (blocktime-13)));
             } else return(0); //fprintf(stderr,"no utxos eligible for staking\n");
         }
         
@@ -1009,7 +1009,7 @@ void static BitcoinMiner()
                         uint256 tmp = B.GetHash();
                         int32_t z; for (z=31; z>=0; z--)
                             fprintf(stderr,"%02x",((uint8_t *)&tmp)[z]);
-                        fprintf(stderr," mined block %d!\n",Mining_height);
+                        fprintf(stderr," mined %s block %d!\n",ASSETCHAINS_SYMBOL,Mining_height);
                     }
                     CValidationState state;
                     if ( !TestBlockValidity(state,B, chainActive.Tip(), true, false))
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 53086291a..67bafd32b 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -4605,7 +4605,7 @@ int32_t komodo_staked(CMutableTransaction &txNew,uint32_t nBits,uint32_t *blockt
     {
         if ( out.nDepth < nMinDepth || out.nDepth > nMaxDepth )
         {
-            fprintf(stderr,"komodo_staked invalid depth %d\n",(int32_t)out.nDepth);
+            //fprintf(stderr,"komodo_staked invalid depth %d\n",(int32_t)out.nDepth);
             continue;
         }
         if ( setAddress.size() )