diff --git a/src/komodo_gateway.h b/src/komodo_gateway.h
index 8970f934d..8e9af6a04 100644
--- a/src/komodo_gateway.h
+++ b/src/komodo_gateway.h
@@ -694,15 +694,22 @@ int32_t komodo_check_deposit(int32_t height,const CBlock& block) // verify above
             }
             prevtotal = total;
         }
-        if ( overflow != 0 || total > COIN/10 )
+        if ( ASSETCHAINS_SYMBOL[0] == 0 )
         {
-            //fprintf(stderr,">>>>>>>> <<<<<<<<<< ht.%d illegal nonz output %.8f n.%d\n",height,dstr(block.vtx[0].vout[1].nValue),n);
-            if ( height >= 235300 )
+            if ( overflow != 0 || total > COIN/10 )
+            {
+                //fprintf(stderr,">>>>>>>> <<<<<<<<<< ht.%d illegal nonz output %.8f n.%d\n",height,dstr(block.vtx[0].vout[1].nValue),n);
+                if ( height >= 235300 )
+                    return(-1);
+            }
+        }
+        else
+        {
+            if ( overflow != 0 || total > 0 )
                 return(-1);
         }
         return(0);
     }
-    
     //fprintf(stderr,"ht.%d n.%d nValue %.8f (%d %d %d)\n",height,n,dstr(block.vtx[0].vout[1].nValue),KOMODO_PAX,komodo_isrealtime(&ht),KOMODO_PASSPORT_INITDONE);
     offset += komodo_scriptitemlen(&opretlen,&script[offset]);
     if ( ASSETCHAINS_SYMBOL[0] == 0 )
@@ -745,7 +752,7 @@ int32_t komodo_check_deposit(int32_t height,const CBlock& block) // verify above
             return(0);
         if ( baseid == USD ) // 6820 in balance calcs
         {
-            if ( height <= 2000 || height == 2968 || height == 2960 || height == 2649 || height == 3275 || height == 3282 || height == 3328 || height == 3468 )
+            if ( height <= 6821 || height <= 2000 || height == 2968 || height == 2960 || height == 2649 || height == 3275 || height == 3282 || height == 3328 || height == 3468 )
             return(0);
         }
         else if ( baseid == EUR )
diff --git a/src/komodo_interest.h b/src/komodo_interest.h
index 2aa745070..0d11992ab 100644
--- a/src/komodo_interest.h
+++ b/src/komodo_interest.h
@@ -75,6 +75,8 @@ uint64_t komodo_interest(int32_t txheight,uint64_t nValue,uint32_t nLockTime,uin
         {
             if ( minutes > 365 * 24 * 60 )
                 minutes = 365 * 24 * 60;
+            if ( txheight >= 275000 )
+                minutes -= 59;
             denominator = (((uint64_t)365 * 24 * 60) / minutes);
             if ( denominator == 0 )
                 denominator = 1; // max KOMODO_INTEREST per transfer, do it at least annually!
@@ -104,7 +106,7 @@ uint64_t komodo_interest(int32_t txheight,uint64_t nValue,uint32_t nLockTime,uin
                 if ( exception == 0 )
                 {
                     numerator = (nValue / 20); // assumes 5%!
-                    if ( txheight < 300000 )
+                    if ( txheight < 275000 )
                         interest = (numerator / denominator);
                     else interest = (numerator * minutes) / ((uint64_t)365 * 24 * 60);
                 }
@@ -117,7 +119,7 @@ uint64_t komodo_interest(int32_t txheight,uint64_t nValue,uint32_t nLockTime,uin
             else
             {
                 numerator = (nValue * KOMODO_INTEREST);
-                if ( txheight < 300000 || numerator * minutes < 365 * 24 * 60 )
+                if ( txheight < 275000 || numerator * minutes < 365 * 24 * 60 )
                     interest = (numerator / denominator) / COIN;
                 else interest = ((numerator * minutes) / ((uint64_t)365 * 24 * 60)) / COIN;
             }
diff --git a/src/main.cpp b/src/main.cpp
index 3ce70ef79..992425f3e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -708,12 +708,23 @@ bool IsStandardTx(const CTransaction& tx, string& reason)
 
 bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime)
 {
+    static uin32_t grandfathered[] =
+    {
+        1477262681, 1477262990, 1477598030, 1477269321, 1480625490, 1482008580, 1485678643, 1485972116, 1486039258, 1486096477, 1486159886, 1486236495, 1486305013, 1486390414, 1486390791, 1486391232, 1486395617, 1486415304, 1486439074, 1486507244, 1486536946, 1486766037, 1486766559, 1486768230, 1486768294, 1487355181, 1487356312, 1487449891, 1487467926, 1487614001, 1487639158, 1489298992, 1489299229, 1489299737, 1489299939, 1489300155, 1489300326, 1489300370, 1489408020, 1489408285, 1489438206, 1489463334, 1489519879, 1489519942, 1489519818, 1489597387, 1489663030, 1489687820, 1489796259, 1489838437, 1489847404, 1490022684
+    };
+    int32_t i;
     if (tx.nLockTime == 0)
         return true;
-    if ( ASSETCHAINS_SYMBOL[0] == 0 && nBlockTime != 1477598030 && nBlockTime != 1477269321 && (int64_t)tx.nLockTime >= LOCKTIME_THRESHOLD && (int64_t)tx.nLockTime < nBlockTime-3600 )
+    if ( ASSETCHAINS_SYMBOL[0] == 0 && (int64_t)tx.nLockTime >= LOCKTIME_THRESHOLD && (int64_t)tx.nLockTime < nBlockTime-3600 )
     {
-        fprintf(stderr,"IsFinalTx reject locktime %u vs nBlockTime %u\n",tx.nLockTime,(uint32_t)nBlockTime);
-        return(false); // need to prevent pastdating tx
+        for (i=0; i<sizeof(grandfathered)/sizeof(*grandfathered); i++)
+            if ( nBlockTime == grandfathered[i] )
+                break;
+        if ( i == sizeof(grandfathered)/sizeof(*grandfathered) )
+        {
+            fprintf(stderr,"IsFinalTx reject locktime %u vs nBlockTime %u\n",tx.nLockTime,(uint32_t)nBlockTime);
+            return(false); // need to prevent pastdating tx
+        }
     }
     if ((int64_t)tx.nLockTime < ((int64_t)tx.nLockTime < LOCKTIME_THRESHOLD ? (int64_t)nBlockHeight : nBlockTime))
         return true;