=== modified file 'Template/LO/SubProcesses/cuts.f'
--- Template/LO/SubProcesses/cuts.f	2016-08-30 23:56:34 +0000
+++ Template/LO/SubProcesses/cuts.f	2017-11-09 15:48:50 +0000
@@ -1238,7 +1238,7 @@
 c     Note the following condition is the first line of setclscales
 c      if(xqcut.gt.0d0.or.ickkw.gt.0.or.scale.eq.0.or.q2fact(1).eq.0)then
 c     Do not duplicate it since some variable are set for syscalc in the fct
-        if(.not.setclscales(p))then
+        if(.not.setclscales(p,.false.))then
            cutsdone=.false.
            cutspassed=.false.
            passcuts = .false.

=== modified file 'Template/LO/SubProcesses/reweight.f'
--- Template/LO/SubProcesses/reweight.f	2016-08-29 10:00:16 +0000
+++ Template/LO/SubProcesses/reweight.f	2017-11-09 15:48:24 +0000
@@ -465,13 +465,15 @@
       return
       end
 
-      logical function setclscales(p)
+      logical function setclscales(p, keepq2bck)
 c**************************************************
 c     Calculate dynamic scales based on clustering
 c     Also perform xqcut and xmtc cuts
+c     keepq2bck allow to not reset the parameter q2bck
 c**************************************************
       implicit none
 
+      logical keepq2bck
       include 'message.inc'
       include 'genps.inc'
       include 'maxconfigs.inc'
@@ -952,8 +954,10 @@
       if(.not. fixed_fac_scale) then
          q2fact(1)=scalefact**2*q2fact(1)
          q2fact(2)=scalefact**2*q2fact(2)
-         q2bck(1)=q2fact(1)
-         q2bck(2)=q2fact(2)
+         if (.not.keepq2bck)then
+            q2bck(1)=q2fact(1)
+            q2bck(2)=q2fact(2)
+         endif
          if (btest(mlevel,3))
      $      write(*,*) 'Set central fact scales to ',sqrt(q2bck(1)),sqrt(q2bck(2))
       endif
@@ -1259,7 +1263,7 @@
       endif
 
 
-      if(.not.setclscales(p)) then ! assign the correct id information.
+      if(.not.setclscales(p,.true.)) then ! assign the correct id information.(preserve q2bck)
          write(*,*) "Fail to cluster the events from the rewgt function"
          stop 1
 c        rewgt = 0d0