diff --git a/map65/libm65/map65a.f90 b/map65/libm65/map65a.f90
index d0b7a21b4..d8782a3cb 100644
--- a/map65/libm65/map65a.f90
+++ b/map65/libm65/map65a.f90
@@ -147,6 +147,7 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb,        &
            ssmax=1.e30
            call ccf65(ss(1,1,i),nhsym,ssmax,sync1,ipol,jpz,dt,     &
                 flipk,syncshort,snr2,ipol2,dt2)
+           if(dt.lt.-2.6 .or. dt.gt.2.5) sync1=-99.0  !###
            call timer('ccf65   ',1)
            if(mode65.eq.0) syncshort=-99.0     !If "No JT65", don't waste time
 
@@ -214,7 +215,7 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb,        &
            if(nqd.eq.1 .and. ntol.le.100) thresh1=0.
            noffset=0
            if(nqd.ge.1) noffset=nint(1000.0*(freq-fqso)-mousedf)
-           if(first_loop) then    !### For Q65 changes ??? ###
+           if(first_loop .and. sync1.gt.0.0) then
               sync1=thresh1+1.0
               noffset=0
               first_loop=.false.
diff --git a/map65/mainwindow.cpp b/map65/mainwindow.cpp
index 543c30795..b24234ac2 100644
--- a/map65/mainwindow.cpp
+++ b/map65/mainwindow.cpp
@@ -1143,6 +1143,10 @@ void MainWindow::diskDat()                                   //diskDat()
   m_diskData=true;
   datcom_.newdat=1;
 
+//  if(g_pWideGraph->m_bForceCenterFreq)  datcom_.fcenter=g_pWideGraph->m_dForceCenterFreq;
+//  qDebug() << "aa" << datcom_.fcenter << g_pWideGraph->m_dForceCenterFreq
+//           << g_pWideGraph->m_bForceCenterFreq;
+
   if(m_fs96000) hsym=2048.0*96000.0/11025.0;   //Samples per JT65 half-symbol
   if(!m_fs96000) hsym=2048.0*95238.1/11025.0;
   for(int i=0; i<304; i++) {           // Do the half-symbol FFTs