diff --git a/basilisk/basilisk.c b/basilisk/basilisk.c
index 16705170f..8c2335457 100755
--- a/basilisk/basilisk.c
+++ b/basilisk/basilisk.c
@@ -916,12 +916,14 @@ void basilisks_loop(void *arg)
                 valsobj = cJSON_CreateObject();
                 if ( btcd->RELAYNODE == 0 && btcd->VALIDATENODE == 0 )
                 {
+                    fprintf(stderr,"e");
                     jaddnum(valsobj,"BTCD",btcd->SEQ.BTCD.numstamps+GECKO_FIRSTPOSSIBLEBTCD);
                     basilisk_standardservice("SEQ",myinfo,GENESIS_PUBKEY,valsobj,0,0);
                     flag++;
                 }
                 if ( (done & 2) == 0 )
                 {
+                    fprintf(stderr,"f");
                     free_json(valsobj);
                     valsobj = cJSON_CreateObject();
                     jaddnum(valsobj,"BTC",btcd->SEQ.BTC.numstamps+GECKO_FIRSTPOSSIBLEBTC);
@@ -930,6 +932,7 @@ void basilisks_loop(void *arg)
                 }
                 free_json(valsobj);
             }
+            fprintf(stderr,"G");
             if ( flag == 0 && myinfo->allcoins_numvirts > 0 )
             {
                 maxmillis = (1000 / myinfo->allcoins_numvirts) + 1;
@@ -938,6 +941,7 @@ void basilisks_loop(void *arg)
                 {
                     if ( virt->started != 0 && virt->active != 0 && virt->virtualchain != 0 )
                     {
+                        fprintf(stderr,"h");
                         gecko_iteration(myinfo,btcd,virt,maxmillis);
                         flag++;
                     }
@@ -945,7 +949,7 @@ void basilisks_loop(void *arg)
                 //portable_mutex_unlock(&Allcoins_mutex);
             }
         }
-        fprintf(stderr,"E ");
+        fprintf(stderr,"i ");
         //for (i=0; i<IGUANA_MAXCOINS; i++)
         //    if ( (coin= Coins[i]) != 0 && coin->RELAYNODE == 0 && coin->VALIDATENODE == 0 && coin->active != 0 && coin->chain->userpass[0] != 0 && coin->MAXPEERS == 1 )
         //        basilisk_bitcoinscan(coin,blockspace,&RAWMEM);
diff --git a/gecko/gecko.c b/gecko/gecko.c
index 90e01c308..9a68b393b 100755
--- a/gecko/gecko.c
+++ b/gecko/gecko.c
@@ -44,18 +44,22 @@ void gecko_iteration(struct supernet_info *myinfo,struct iguana_info *btcd,struc
     char mineraddr[64]; int32_t hwmhdrsi,longesthdrsi;
     hwmhdrsi = virt->blocks.hwmchain.height / virt->chain->bundlesize;
     longesthdrsi = virt->longestchain / virt->chain->bundlesize;
-    if ( hwmhdrsi <= longesthdrsi )
+    if ( hwmhdrsi <= longesthdrsi && virt->blocks.hwmchain.height < virt->longestchain-1 )
     {
         if ( time(NULL) > virt->hdrstime+3 )
         {
+            if ( strcmp("BTCD",virt->symbol) == 0 )
+                ;
+            fprintf(stderr,"r");
             gecko_requesthdrs(myinfo,virt,hwmhdrsi);
+            fprintf(stderr,"R");
             virt->hdrstime = (uint32_t)time(NULL);
         }
     }
     if ( btcd->RELAYNODE != 0 && virt->blocks.hwmchain.height >= virt->longestchain-1 )
     {
         bitcoin_address(mineraddr,virt->chain->pubtype,myinfo->persistent_pubkey33,33);
-        //printf("mine.%s %s\n",virt->symbol,mineraddr);
+        fprintf(stderr,"mine.%s %s\n",virt->symbol,mineraddr);
         gecko_miner(myinfo,btcd,virt,maxmillis,myinfo->persistent_pubkey33);
     }
 }
diff --git a/gecko/gecko_headers.c b/gecko/gecko_headers.c
index 8b7e42a4a..311b2db53 100755
--- a/gecko/gecko_headers.c
+++ b/gecko/gecko_headers.c
@@ -40,10 +40,10 @@ int32_t basilisk_respond_geckogetheaders(struct supernet_info *myinfo,struct igu
     return(-1);
 }
 
-void gecko_headerupdate(struct iguana_info *virt,bits256 hash2,int32_t height)
+void gecko_blockhashupdate(struct iguana_info *virt,bits256 hash2,int32_t height)
 {
     int32_t bundlei; struct iguana_bundle *bp; bits256 zero;
-    char str[65]; printf("height.%d %s\n",height,bits256_str(str,hash2));
+    char str[65]; printf("gecko_blockhashupdate height.%d %s\n",height,bits256_str(str,hash2));
     memset(zero.bytes,0,sizeof(zero));
     if ( (height % virt->chain->bundlesize) == 0 )
         bp = iguana_bundlecreate(virt,&bundlei,height,hash2,zero,0);
@@ -53,17 +53,23 @@ void gecko_headerupdate(struct iguana_info *virt,bits256 hash2,int32_t height)
 
 char *gecko_headersarrived(struct supernet_info *myinfo,struct iguana_info *virt,char *remoteaddr,uint8_t *data,int32_t datalen,bits256 firsthash2)
 {
-    bits256 hash2; struct iguana_block *block; int32_t firstheight,i,len=0,n,num; struct iguana_msgblock msgB;
+    bits256 hash2,prevhash2; struct iguana_block *block; int32_t height,firstheight,i,len=0,n,num; struct iguana_msgblock msgB;
     num = (int32_t)(datalen / 84);
-    char str[65]; printf("headers arrived.%d from %s\n",n,bits256_str(str,firsthash2));
+    char str[65]; printf("headers arrived.%d from %s\n",num,bits256_str(str,firsthash2));
     if ( (block= iguana_blockfind("geckohdrs",virt,firsthash2)) != 0 && (firstheight= block->height) >= 0 )
     {
-        gecko_headerupdate(virt,firsthash2,firstheight);
+        gecko_blockhashupdate(virt,firsthash2,firstheight);
+        prevhash2 = firsthash2;
         for (i=0; i<num; i++)
         {
             if ( (n= iguana_rwblock(virt->symbol,virt->chain->zcash,virt->chain->auxpow,virt->chain->hashalgo,0,&hash2,&data[len],&msgB,datalen-len)) > 0 )
             {
-                gecko_headerupdate(virt,hash2,firstheight + i + 1);
+                if ( bits256_cmp(msgB.H.prev_block,prevhash2) == 0 )
+                {
+                    height = (firstheight + i + 1);
+                    gecko_blockhashupdate(virt,hash2,height);
+                    printf("ht.%d %s %08x t.%u\n",height,bits256_str(str,hash2),msgB.H.bits,msgB.H.timestamp);
+                } else printf("ht.%d non prevhash i.%d\n",height,i);
                 len += n;
             }
         }