diff --git a/iguana/iguana_instantdex.c b/iguana/iguana_instantdex.c
index 97f78ec31..2982cb70a 100755
--- a/iguana/iguana_instantdex.c
+++ b/iguana/iguana_instantdex.c
@@ -184,29 +184,42 @@ struct instantdex_event *instantdex_addevent(struct instantdex_stateinfo *states
     }
 }
 
-int32_t instantdex_FSMtest(struct instantdex_stateinfo *states,int32_t numstates)
+double instantdex_FSMtest(struct instantdex_stateinfo *states,int32_t numstates,int32_t maxiters)
 {
-    int32_t i,n,m=0,initials[100],maxiters = 1; struct instantdex_stateinfo *state; struct instantdex_event *event;
-    for (i=n=0; i<numstates; i++)
-        if ( states[i].initialstate != 0 )
+    int32_t i,most,r,n,m=0,initials[100]; struct instantdex_stateinfo *state; struct instantdex_event *event; double sum = 0.;
+    if ( maxiters < 1 )
+        maxiters = 1;
+    for (i=n=most=0; i<numstates; i++)
+        if ( states[i].initialstate > 0 )
+        {
+            printf("initialstate[%d] %d %s\n",i,states[i].initialstate,states[i].name);
             initials[n++] = i;
+        }
     if ( n > 0 && n < sizeof(initials)/sizeof(*initials) )
     {
         for (i=0; i<maxiters; i++)
         {
-            state = &states[initials[rand() % n]];
+            r = rand() % n;
+            state = &states[initials[r]];
             m = 0;
-            while ( m++ < 1000 && state->initialstate >= 0 )
+            while ( m++ < 1000 && state->initialstate >= 0 && state->numevents )
             {
+                if ( (i % 1000000) == 0 )
+                    fprintf(stderr,"%s ",state->name);
                 event = &state->events[rand() % state->numevents];
                 if ( event->nextstateind < 0 )
                     break;
                 state = &states[event->nextstateind];
             }
-            printf("reached terminal state.%s after m.%d events\n",state->name,m);
+            if ( m > most )
+                most = m;
+            sum += m;
+            if ( (i % 1000000) == 0 )
+                fprintf(stderr,"reached %s m.%d events most.%d ave %.2f\n",state->name,m,most,sum/(i+1));
         }
     }
-    return(m);
+    fprintf(stderr," most.%d ave %.2f\n",most,sum/(i+1));
+    return(sum / maxiters);
 }
 
 cJSON *InstantDEX_argjson(char *reference,char *message,char *othercoinaddr,char *otherNXTaddr,int32_t iter,int32_t val,int32_t val2)
diff --git a/iguana/swaps/iguana_BTCswap.c b/iguana/swaps/iguana_BTCswap.c
index ed35f80be..5d853aa3e 100755
--- a/iguana/swaps/iguana_BTCswap.c
+++ b/iguana/swaps/iguana_BTCswap.c
@@ -14,10 +14,11 @@
  ******************************************************************************/
 
 #include "../exchanges/bitcoin.h"
+#define INSTANTDEX_DECKSIZE 1000
 /* https://bitcointalk.org/index.php?topic=1340621.msg13828271#msg13828271
    https://bitcointalk.org/index.php?topic=1364951
 Tier Nolan's approach is followed with the following changes:
-  a) instead of cutting 1000 keypairs, only 777 are a
+  a) instead of cutting 1000 keypairs, only INSTANTDEX_DECKSIZE are a
   b) instead of sending the entire 256 bits, it is truncated to 64 bits. With odds of collision being so low, it is dwarfed by the ~0.1% insurance factor.
   c) D is set to 100x the insurance rate of 1/777 12.87% + BTC amount
   d) insurance is added to Bob's payment, which is after the deposit and bailin
@@ -496,7 +497,7 @@ cJSON *instantdex_parseargjson(struct supernet_info *myinfo,struct exchange_info
         if ( juint(argjson,"verified") != 0 )
             swap->otherverifiedcut = 1;
         jaddnum(newjson,"verified",swap->otherverifiedcut);
-        if ( instantdex_pubkeyargs(swap,newjson,2 + deckflag*777,myinfo->persistent_priv,swap->orderhash,0x02+swap->isbob) == 2 + deckflag*777 )
+        if ( instantdex_pubkeyargs(swap,newjson,2 + deckflag*INSTANTDEX_DECKSIZE,myinfo->persistent_priv,swap->orderhash,0x02+swap->isbob) == 2 + deckflag*INSTANTDEX_DECKSIZE )
             instantdex_getpubs(swap,argjson,newjson);
         else printf("ERROR: couldnt generate pubkeys\n");
     }
@@ -687,7 +688,7 @@ struct instantdex_stateinfo *BTC_initFSM(int32_t *n)
     struct instantdex_stateinfo *s = 0;
     *n = 2;
     // Four initial states are BOB_sentoffer, ALICE_gotoffer, ALICE_sentoffer, BOB_gotoffer
-    // the initiator includes signed feetx and deck of 777 keypairs
+    // the initiator includes signed feetx and deck of INSTANTDEX_DECKSIZE keypairs
     //
     // "BTCabcde are message events from other party (message events capped at length 8)
     // "lowercas" are special events, <TX> types: <fee>, <dep>osit, <alt>payment, <acl> is altcoin claim
@@ -696,7 +697,7 @@ struct instantdex_stateinfo *BTC_initFSM(int32_t *n)
     
     // states instantdex_statecreate(s,n,<Name of State>,handlerfunc,errorhandler,<Timeout State>,<Error State>
     // a given state has a couple of handlers and custom events, with timeouts and errors invoking a bypass
-    s = instantdex_statecreate(s,n,"BTC_cleanup",BTC_cleanupfunc,0,0,0,0); // from states without any commits
+    s = instantdex_statecreate(s,n,"BTC_cleanup",BTC_cleanupfunc,0,0,0,-1); // from states without any commits
     
     s = instantdex_statecreate(s,n,"BOB_reclaim",BOB_reclaimfunc,0,0,0,0); // Bob's gets his deposit back
     instantdex_addevent(s,*n,"BOB_reclaim","brcfound","poll","BTC_cleanup");
@@ -791,7 +792,11 @@ struct instantdex_stateinfo *BTC_initFSM(int32_t *n)
     instantdex_addevent(s,*n,"BOB_sentpayment","btcfound","BTCdone","BOB_claimedalt");
     instantdex_addevent(s,*n,"BOB_sentpayment","BTCprivM","BTCdone","BOB_claimedalt");
     instantdex_addevent(s,*n,"BOB_sentpayment","poll","poll","BOB_sentpayment");
-    instantdex_FSMtest(s,*n);
+    {
+        double startmillis = OS_milliseconds();
+        instantdex_FSMtest(s,*n,10000000);
+        printf("elapsed %.3f ave %.6f\n",OS_milliseconds() - startmillis,(OS_milliseconds() - startmillis)/10000000);
+    }
     return(s);
 }