diff --git a/src/assetchains b/src/assetchains
index 8905a9eb7..a85cdbe38 100755
--- a/src/assetchains
+++ b/src/assetchains
@@ -16,11 +16,10 @@ echo $pubkey
 ./komodod -pubkey=$pubkey -ac_name=BOTS -ac_supply=999999 -addnode=78.47.196.146 $1 -gen &
 ./komodod -pubkey=$pubkey -ac_name=MGW -ac_supply=999999 -addnode=78.47.196.146 $1 -gen &
 ./komodod -pubkey=$pubkey -ac_name=MVP -ac_supply=1000000 -addnode=78.47.196.146 $1 -gen &
-#./komodod -pubkey=$pubkey -ac_name=WIRELESS -ac_supply=21000000 -addnode=78.47.196.146 $1  &
 ./komodod -pubkey=$pubkey -ac_name=WLC -ac_supply=210000000 -addnode=148.251.190.89 $1 -gen &
 ./komodod -pubkey=$pubkey -ac_name=KV -ac_supply=1000000 -addnode=78.47.196.146 $1 -gen &
 ./komodod -pubkey=$pubkey -ac_name=CEAL -ac_supply=366666666 -addnode=78.47.196.146 $1 -gen &
-./komodod -pubkey=$pubkey -ac_name=MESH -ac_supply=1000001 -addnode=78.47.196.146 $1 -gen &
+./komodod -pubkey=$pubkey -ac_name=MESH -ac_supply=1000007 -addnode=78.47.196.146 $1 -gen &
 sleep $delay
 
 ./komodod -pubkey=$pubkey -ac_name=USD -addnode=78.47.196.146 $1  &
diff --git a/src/komodo_kv.h b/src/komodo_kv.h
index 1ed6e1347..046863822 100644
--- a/src/komodo_kv.h
+++ b/src/komodo_kv.h
@@ -83,11 +83,15 @@ int32_t komodo_kvsearch(uint256 *pubkeyp,int32_t current_height,uint32_t *flagsp
             }
             //printf(" ptr->pubkey\n");
             memcpy(pubkeyp,&ptr->pubkey,sizeof(*pubkeyp));
-            if ( (retval= ptr->valuesize) != 0 )
+            if ( (retval= ptr->valuesize) > 0 )
                 memcpy(value,ptr->value,retval);
         }
     }
     portable_mutex_unlock(&KOMODO_KV_mutex);
+    if ( retval < 0 )
+    {
+        // search rawmempool
+    }
     return(retval);
 }
 
@@ -100,6 +104,11 @@ void komodo_kvupdate(uint8_t *opretbuf,int32_t opretlen,uint64_t value)
     iguana_rwnum(0,&opretbuf[5],sizeof(height),&height);
     iguana_rwnum(0,&opretbuf[9],sizeof(flags),&flags);
     key = &opretbuf[13];
+    if ( keylen+13 > opretlen )
+    {
+        printf("komodo_kvupdate: keylen.%d + 13 > opretlen.%d\n",keylen,opretlen);
+        return;
+    }
     valueptr = &key[keylen];
     fee = komodo_kvfee(flags,opretlen,keylen);
     //printf("fee %.8f vs %.8f flags.%d keylen.%d valuesize.%d height.%d (%02x %02x %02x) (%02x %02x %02x)\n",(double)fee/COIN,(double)value/COIN,flags,keylen,valuesize,height,key[0],key[1],key[2],valueptr[0],valueptr[1],valueptr[2]);
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 5f78be478..d1b007805 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -635,6 +635,7 @@ void CWallet::ClearNoteWitnessCache()
         }
     }
     nWitnessCacheSize = 0;
+    //fprintf(stderr,"Clear witness cache\n");
 }
 
 void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
@@ -669,6 +670,7 @@ void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
             }
         }
         if (nWitnessCacheSize < WITNESS_CACHE_SIZE) {
+            //fprintf(stderr,"increment nWitnesscache -> %d\n",(int32_t)nWitnessCacheSize);
             nWitnessCacheSize += 1;
         }
 
@@ -782,6 +784,7 @@ void CWallet::DecrementNoteWitnesses(const CBlockIndex* pindex)
                 }
             }
         }
+        //fprintf(stderr,"decrement witness cache -> %d\n",(int32_t)nWitnessCacheSize);
         nWitnessCacheSize -= 1;
         for (std::pair<const uint256, CWalletTx>& wtxItem : mapWallet) {
             for (mapNoteData_t::value_type& item : wtxItem.second.mapNoteData) {
@@ -2761,7 +2764,7 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                 if ( KOMODO_EXCHANGEWALLET != 0 )
                 {
                     //fprintf(stderr,"KOMODO_EXCHANGEWALLET disable interest sum %.8f, interest2 %.8f\n",(double)interest/COIN,(double)interest2/COIN);
-                    interest = 0;
+                    interest = 0; // interest2 also
                 }
                 CAmount nChange = (nValueIn - nValue + interest2);
 fprintf(stderr,"wallet change %.8f (%.8f - %.8f) interest %.8f interest2 %.8f total %.8f\n",(double)nChange/COIN,(double)nValueIn/COIN,(double)nValue/COIN,(double)interest2/COIN,(double)interest/COIN,(double)nTotalValue/COIN);
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index ccba41065..ed7edbbc1 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -59,7 +59,7 @@ static const unsigned int MAX_FREE_TRANSACTION_CREATE_SIZE = 1000;
 //  Should be large enough that we can expect not to reorg beyond our cache
 //  unless there is some exceptional network disruption.
 #define _COINBASE_MATURITY 100
-static const unsigned int WITNESS_CACHE_SIZE = _COINBASE_MATURITY+1;
+static const unsigned int WITNESS_CACHE_SIZE = _COINBASE_MATURITY+10;
 
 class CAccountingEntry;
 class CBlockIndex;