diff --git a/detectors/cds/bin/do_exonerate.csh b/detectors/cds/bin/do_exonerate.csh
index 7a8ca9c..c57b7fb 100755
--- a/detectors/cds/bin/do_exonerate.csh
+++ b/detectors/cds/bin/do_exonerate.csh
@@ -167,7 +167,7 @@ exonerate \
     --refine region                   \
     --refineboundary 5000             \
     --singlepass FALSE                \
-    --dpmemory 128                    \
+    --dpmemory 1024                   \
     $DbFile $GenoFile > $base.exo.raw
 CheckAbort 20 "exonerate failure"
 
diff --git a/detectors/cds/lib/filterbx.awk b/detectors/cds/lib/filterbx.awk
index cd232c2..775ad30 100644
--- a/detectors/cds/lib/filterbx.awk
+++ b/detectors/cds/lib/filterbx.awk
@@ -7,6 +7,7 @@ BEGIN {
   if (IDMIN == "")  IDMIN  = 80
   if (NBMIN == "")  NBMIN  = 50
   if (NBMAX == "")  NBMAX  = 200
+  if (COMIN == "")  COMIN  = 0.8  
 }
 
 /^#/ { next }