diff --git a/src/pow.cpp b/src/pow.cpp
index eb6bd91e2..096188609 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -168,7 +168,7 @@ arith_uint256 oldRT_CST_RST(int32_t height,uint32_t nTime,arith_uint256 bnTarget
 arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
 {
     int64_t outerK; arith_uint256 mintarget = bnTarget / arith_uint256(2);
-    if ( (ts[0] - ts[W+1]) < (T * numerator)/denominator )
+    if ( (ts[0] - ts[W]) < (T * numerator)/denominator )
     {
         outerK = (K * (nTime-ts[0]) * (ts[0]-ts[W]) * denominator) / (numerator * (T * T));
         if ( outerK < K )
@@ -183,7 +183,7 @@ arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTar
             for (z=31; z>=0; z--)
                 fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
         }
-        fprintf(stderr," ht.%d initial outerK.%lld %d * %d * %d / %d\n",height,(long long)outerK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
+        fprintf(stderr," ht.%d initial W.%d outerK.%lld %d * %d * %d / %d\n",height,W,(long long)outerK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
     } //else fprintf(stderr,"ht.%d no outer trigger %d >= %d\n",height,(ts[0] - ts[W]),(T * numerator)/denominator);
     return(bnTarget);
 }
@@ -322,7 +322,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
 
     // Find the first block in the averaging interval
     const CBlockIndex* pindexFirst = pindexLast;
-    arith_uint256 ct[64],ctinv[64],bnTmp,bnPrev,bnTarget,bnTarget3,bnTarget6,bnTarget12,bnTot {0};
+    arith_uint256 ct[64],ctinv[64],bnTmp,bnPrev,bnTarget,bnTarget2,bnTarget3,bnTarget6,bnTarget12,bnTot {0};
     uint32_t nbits,blocktime,ts[sizeof(ct)/sizeof(*ct)]; int32_t zflags[sizeof(ct)/sizeof(*ct)],i,diff,height=0,mult = 0,tipdiff = 0;
     memset(ts,0,sizeof(ts));
     memset(ct,0,sizeof(ct));
@@ -397,24 +397,30 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
                 origtarget = bnTarget;
                 if ( zflags[0] == 0 || zflags[0] == 3 )
                 {
-                    bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,15,100,2,20);
+                    bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,1,60,1,10);
                     if ( bnTarget < origtarget )
                         zawyflag = 2;
                     else
                     {
-                        bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,1,2,3,30);
+                        bnTarget = RT_CST_RST_outer(height,pblock->nTime,origtarget,ts,ct,15,100,2,20);
                         if ( bnTarget < origtarget )
                             zawyflag = 2;
                         else
                         {
-                            bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,7,3,6,40);
+                            bnTarget = RT_CST_RST_outer(height,pblock->nTime,origtarget,ts,ct,1,2,3,30);
                             if ( bnTarget < origtarget )
                                 zawyflag = 2;
                             else
                             {
-                                bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,12,7,12,50);
+                                bnTarget = RT_CST_RST_outer(height,pblock->nTime,origtarget,ts,ct,7,3,6,40);
                                 if ( bnTarget < origtarget )
                                     zawyflag = 2;
+                                else
+                                {
+                                    bnTarget = RT_CST_RST_outer(height,pblock->nTime,origtarget,ts,ct,12,7,12,50);
+                                    if ( bnTarget < origtarget )
+                                        zawyflag = 2;
+                                }
                             }
                         }
                     }
@@ -424,8 +430,18 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
                     for (i=0; i<50; i++)
                         if ( zflags[i] == 2 )
                             break;
+                    if ( i < 10 )
+                    {
+                        bnTarget = RT_CST_RST_inner(height,pblock->nTime,bnTarget,ts,ct,1,i);
+                        if ( bnTarget > origtarget )
+                            bnTarget = origtarget;
+                    }
                     if ( i < 20 )
-                        bnTarget = RT_CST_RST_inner(height,pblock->nTime,bnTarget,ts,ct,2,i);
+                    {
+                        bnTarget2 = RT_CST_RST_inner(height,pblock->nTime,bnTarget,ts,ct,2,i);
+                        if ( bnTarget2 < bnTarget )
+                            bnTarget = bnTarget2;
+                    }
                     if ( i < 30 )
                     {
                         bnTarget3 = RT_CST_RST_inner(height,pblock->nTime,bnTarget,ts,ct,3,i);