diff --git a/lib/fst280/get_fst280_bitmetrics.f90 b/lib/fst280/get_fst280_bitmetrics.f90
index 50568210f..bba000d59 100644
--- a/lib/fst280/get_fst280_bitmetrics.f90
+++ b/lib/fst280/get_fst280_bitmetrics.f90
@@ -72,10 +72,10 @@ subroutine get_fst280_bitmetrics(cd,nss,hmod,bitmetrics,badsync)
    nsync=is1+is2+is3   !Number of correct hard sync symbols, 0-24
 
    badsync=.false.
-!   if(nsync .lt. 8) then
-!      badsync=.true.
-!      return
-!   endif
+   if(nsync .lt. 8) then
+      badsync=.true.
+      return
+   endif
 
    bitmetrics=0.0
    do nseq=1,4            !Try coherent sequences of 1, 2, and 4 symbols
diff --git a/lib/fst280_decode.f90 b/lib/fst280_decode.f90
index 377332cb7..a0e4b4a0c 100644
--- a/lib/fst280_decode.f90
+++ b/lib/fst280_decode.f90
@@ -442,9 +442,10 @@ contains
    call pctile(s2(ia:ib),ib-ia+1,30,base)
    s2=s2/base
    
-   thresh=1.25
+   thresh=1.4
  
    ncand=0
+   candidates=0
    if(ia.lt.3) ia=3
    if(ib.gt.18000-2) ib=18000-2
    do i=ia,ib
@@ -465,7 +466,8 @@ contains
    snr_cand(1:ncand)=candidates(1:ncand,2)
    call indexx(snr_cand,ncand,indx)
    nmax=5
-   do i=1,min(ncand,nmax)
+   ncand=min(ncand,nmax)
+   do i=1,ncand
       j=indx(ncand+1-i)
       candidates0(i,1:4)=candidates(j,1:4)
    enddo