diff --git a/iguana/exchanges/LP_nativeDEX.c b/iguana/exchanges/LP_nativeDEX.c
index c5c34b353..6232d159b 100644
--- a/iguana/exchanges/LP_nativeDEX.c
+++ b/iguana/exchanges/LP_nativeDEX.c
@@ -17,7 +17,10 @@
 //  LP_nativeDEX.c
 //  marketmaker
 //
-// single utxo allocations alice, reject result, latency
+// single utxo allocations alice
+// gc cJSON
+// more retries for swap sendrawtransaction
+// pbca26 unfinished swaps
 // alice waiting for bestprice
 //if ( G.LP_pendingswaps != 0 )
 //return(-1);
@@ -179,7 +182,6 @@ char *LP_command_process(void *ctx,char *myipaddr,int32_t pubsock,cJSON *argjson
     char *retstr=0;
     if ( jobj(argjson,"result") != 0 || jobj(argjson,"error") != 0 )
         return(0);
-    //double millis = OS_milliseconds();
     if ( LP_tradecommand(ctx,myipaddr,pubsock,argjson,data,datalen) <= 0 )
     {
         if ( (retstr= stats_JSON(ctx,myipaddr,pubsock,argjson,"127.0.0.1",0)) != 0 )
@@ -189,8 +191,6 @@ char *LP_command_process(void *ctx,char *myipaddr,int32_t pubsock,cJSON *argjson
                 //LP_send(pubsock,retstr,(int32_t)strlen(retstr)+1,0);
         }
     } //else printf("finished tradecommand (%s)\n",jprint(argjson,0));
-    //if ( OS_milliseconds()-millis > 100 )
-    //    printf("%.3f %s\n",OS_milliseconds()-millis,jprint(argjson,0));
     return(retstr);
 }
 
diff --git a/iguana/exchanges/LP_transaction.c b/iguana/exchanges/LP_transaction.c
index 4df4b3895..3f6ff3e43 100644
--- a/iguana/exchanges/LP_transaction.c
+++ b/iguana/exchanges/LP_transaction.c
@@ -987,6 +987,7 @@ int32_t LP_vins_select(void *ctx,struct iguana_info *coin,int64_t *totalp,int64_
         vp->suppress_pubkeys = suppress_pubkeys;
         vp->ignore_cltverr = ignore_cltverr;
         jaddi(vins,LP_inputjson(up->U.txid,up->U.vout,spendscriptstr));
+        LP_unavailableset(up->U.txid,up->U.vout,(uint32_t)time(NULL)+600,G.LP_mypub25519);
         if ( remains <= 0 && i >= numpre-1 )
             break;
         if ( numunspents < 0 )
@@ -1019,7 +1020,7 @@ char *LP_createrawtransaction(cJSON **txobjp,int32_t *numvinsp,struct iguana_inf
     }
     if ( coin->numutxos < LP_MINDESIRED_UTXOS )
         dustcombine = 0;
-    else if ( coin->numutxos >= LP_MINDESIRED_UTXOS )
+    else if ( coin->numutxos >= LP_MAXDESIRED_UTXOS )
         dustcombine = 2;
     else dustcombine = 1;
     amount = txfee;
diff --git a/iguana/exchanges/LP_utxo.c b/iguana/exchanges/LP_utxo.c
index 0f2aee2c3..6e49013b0 100644
--- a/iguana/exchanges/LP_utxo.c
+++ b/iguana/exchanges/LP_utxo.c
@@ -58,8 +58,32 @@ int32_t _LP_inuse_delete(bits256 txid,int32_t vout)
 
 struct LP_inuse_info *_LP_inuse_add(uint32_t expiration,bits256 otherpub,bits256 txid,int32_t vout)
 {
-    struct LP_inuse_info *lp;
-    if ( bits256_nonz(txid) != 0 && LP_numinuse < sizeof(LP_inuse)/sizeof(*LP_inuse) )
+    struct LP_inuse_info *lp; int32_t i,n,oldesti; uint32_t now,oldest;
+    if ( LP_numinuse >= sizeof(LP_inuse)/sizeof(*LP_inuse) )
+    {
+        now = (uint32_t)time(NULL);
+        n = 0;
+        oldesti = -1;
+        oldest = 0;
+        for (i=0; i<sizeof(LP_inuse)/sizeof(*LP_inuse); i++)
+        {
+            lp = &LP_inuse[i];
+            if ( now > lp->expiration )
+                _LP_inuse_delete(lp->txid,lp->vout), n++;
+            else if ( oldest == 0 || lp->expiration < oldest )
+            {
+                oldest = lp->expiration;
+                oldesti = i;
+            }
+        }
+        if ( n == 0 )
+        {
+            printf("_LP_inuse_add out of slots error, pick oldesti %d\n",oldesti);
+            lp = &LP_inuse[oldesti];
+            _LP_inuse_delete(lp->txid,lp->vout);
+        } else printf("expired %d inuse slots\n",n);
+    }
+    if ( bits256_nonz(txid) != 0 )
     {
         if ( (lp= _LP_inuse_find(txid,vout)) == 0 )
         {