diff --git a/lib/afc9.f90 b/lib/afc9.f90
index bcf291ae8..dd106aa48 100644
--- a/lib/afc9.f90
+++ b/lib/afc9.f90
@@ -54,13 +54,14 @@ subroutine afc9(c3a,npts,fsample,a,syncpk)
      enddo
      if(a(3).ne.a3) call shft(c3a,a(3),a3,c3)
      chisqr=fchisq(c3,npts,fsample,a)
+!     write(*,4000) 0,0,a,-chisqr
      if(chisqr/chisqr0.gt.0.99) exit
      chisqr0=chisqr
   enddo
 
   syncpk=-chisqr
   c3a=c3
-!  write(*,4001) a,-chisq2
+!  write(*,4001) a,syncpk
 !4001 format(3x,3f10.4,f11.3)
 
   return
diff --git a/lib/fchisq.f90 b/lib/fchisq.f90
index 6eb8b6b68..1aa2b0bb7 100644
--- a/lib/fchisq.f90
+++ b/lib/fchisq.f90
@@ -34,8 +34,11 @@ real function fchisq(c3,npts,fsample,a)
         sum0=sum0+pp
      endif
   enddo
-  sync=sum1/10000.0
-  fchisq=-sync
+  sync_4992=(sum1/16.0)/(sum0/69.0) - 1.0             !r4992
+  sync_4993=sum1/10000.0                              !r4993+
+!  write(80,3001) 1.e-5*sum1,1.e-5*sum0,sync_4992,sync_4993,sync
+!3001 format(5f11.4)
+  fchisq=-sync_4993
 
   return
 end function fchisq
diff --git a/lib/softsym.f90 b/lib/softsym.f90
index 120fb6df9..6475b0e46 100644
--- a/lib/softsym.f90
+++ b/lib/softsym.f90
@@ -28,10 +28,12 @@ subroutine softsym(id2,npts8,nsps8,newdat,fpk,syncpk,snrdb,xdt,        &
   fsample=1500.0/ndown
   a=0.
   call timer('afc9    ',0)
-  call afc9(c3,nz3,fsample,a,syncpk)  !Find deltaF, fDot, fDDot
+  call afc9(c3,nz3,fsample,a,syncpk)  !Find deltaF, fDot, extra DT
   call timer('afc9    ',1)
   freq=fpk - a(1)
   drift=-2.0*a(2)
+!  write(*,3301) fpk,freq,a
+!3301 format(2f9.3,3f10.4)
   a3=a(3)
   a(3)=0.