diff --git a/setup.py b/setup.py
index 591f954..39fab91 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@
 
 setup(
     name = 'tiddit',
-    version = '3.9.1',
+    version = '3.9.2',
 
 
     url = "https://github.com/SciLifeLab/TIDDIT",
diff --git a/tiddit/__main__.py b/tiddit/__main__.py
index f079dde..5916f66 100644
--- a/tiddit/__main__.py
+++ b/tiddit/__main__.py
@@ -18,7 +18,7 @@
 import tiddit.tiddit_gc as tiddit_gc
 
 def main():
-	version="3.9.1"
+	version="3.9.2"
 	parser = argparse.ArgumentParser("""tiddit-{}""".format(version),add_help=False)
 	parser.add_argument("--sv"	 , help="call structural variation", required=False, action="store_true")
 	parser.add_argument("--cov"        , help="generate a coverage bed file", required=False, action="store_true")
@@ -60,9 +60,9 @@ def main():
 		parser.add_argument('--skip_assembly', action="store_true", help="Skip running local assembly, tiddit will perform worse, but wont require bwa and bwa indexed ref, and will complete quicker")
 		parser.add_argument('--bwa', type=str,default="bwa", help="path to bwa executable file(default=bwa)")
 		parser.add_argument('--min_clip', type=int,default=4, help="Minimum clip reads to initiate local assembly of a region(default=4)")
-		parser.add_argument('--padding', type=int,default=4, help="Extend the local assembly by this number of bases (default=200bp)")
+		parser.add_argument('--padding', type=int,default=100, help="Extend the local assembly by this number of bases (default=100bp)")
 		parser.add_argument('--min_pts_clips', type=int,default=3, help="min-pts parameter for the clustering of candidates for local assembly (default=3)")
-		parser.add_argument('--max_assembly_reads', type=int,default=100000, help="Skip assembly of regions containing too many reads (default=10000 reads)")
+		parser.add_argument('--max_assembly_reads', type=int,default=100000, help="Skip assembly of regions containing too many reads (default=100000 reads)")
 		parser.add_argument('--max_local_assembly_region', type=int,default=2000, help="maximum size of the clip read cluster for being considered a local assembly candidate (default=2000 bp)")
 		parser.add_argument('--min_anchor_len', type=int,default=60, help="minimum mapped bases to be considered a clip read  (default=60 bp)")
 		parser.add_argument('--min_clip_len', type=int,default=25, help="minimum clipped bases to be considered a clip read (default=25 bp)")
diff --git a/tiddit/tiddit_variant.pyx b/tiddit/tiddit_variant.pyx
index 1f00bfc..92e91a7 100644
--- a/tiddit/tiddit_variant.pyx
+++ b/tiddit/tiddit_variant.pyx
@@ -156,7 +156,11 @@ def find_sv_type(chrA,chrB,inverted,non_inverted,args,sample_data,samples,librar
 
 	p=library["contig_ploidy_{}".format(chrA)]
 	for sample in samples:
-		cn=int(round(sample_data[sample]["covM"]*p/library[ "avg_coverage_{}".format(chrA) ]))
+		if library[ "avg_coverage_{}".format(chrA) ] != 0:
+			cn=int(round(sample_data[sample]["covM"]*p/library[ "avg_coverage_{}".format(chrA) ]))
+		else:
+			cn=int(round(sample_data[sample]["covM"]*args.n/library[ "avg_coverage" ]))
+
 
 	#mitochondria or similar
 	if p > args.n*10:
@@ -261,7 +265,6 @@ def define_variant(str chrA, str bam_file_name,dict sv_clusters,args,dict librar
 			s=int(math.floor(sv_clusters[chrA][chrB][cluster]["startA"]/50.0))
 			e=int(math.floor(sv_clusters[chrA][chrB][cluster]["endA"]/50.0))+1
 			avg_a=numpy.average(coverage_data[chrA][s:e])
-			#print(f"{chrA}-{posA}-{chrB}")
 
 			if avg_a > args.max_coverage*library[ "avg_coverage_{}".format(chrA) ]:
 				continue
@@ -305,8 +308,12 @@ def define_variant(str chrA, str bam_file_name,dict sv_clusters,args,dict librar
 					e=int(math.floor(posB/50.0))+1
 					coverage_between=coverage_data[chrA][s:e]
 					gc_between=gc[chrA][s:e]
-
-					sample_data[sample]["covM"]=numpy.average(coverage_between[ gc_between > -1 ] )
+					coverage_between=coverage_between[ gc_between > -1 ]
+					if len(coverage_between) > 4:
+						sample_data[sample]["covM"]=numpy.average(coverage_between)
+					else:
+						sample_data[sample]["covM"]=library[ "avg_coverage_{}".format(chrA) ]
+						
 
 			inverted=0
 			non_inverted=0
@@ -559,7 +566,7 @@ def main(str bam_file_name,dict sv_clusters,args,dict library,int min_mapq,sampl
 		for chrB in sv_clusters[chrA]:
 			variants[chrB]=[]
 
-	variants_list=Parallel(n_jobs=args.threads,prefer="threads",timeout=99999)( delayed(define_variant)(chrA,bam_file_name,sv_clusters,args,library,min_mapq,samples,coverage_data,contig_number,max_ins_len,contig_seqs,gc) for chrA in sv_clusters)
+	variants_list=Parallel(n_jobs=args.threads,prefer="threads")( delayed(define_variant)(chrA,bam_file_name,sv_clusters,args,library,min_mapq,samples,coverage_data,contig_number,max_ins_len,contig_seqs,gc) for chrA in sv_clusters)
 
 	ratios={"fragments_A":[],"fragments_B":[],"reads_A":[],"reads_B":[]}
 	for v in variants_list: