Dear David, Do you have family phased data that you can upload to GEDmatch? In my opinion it is much more important that you upload phased data to GEDmatch than that you fix your no calls. Fixing any errors you have in your data is important, particularly when you moved to phased data. If you are married and have a child then generating phased data is fairly easy. Your IBS pileups should be dramatically reduced once you move to phased data. Sincerely, Tim Janzen -----Original Message----- From: genealogy-dna-bounces@rootsweb.com [mailto:genealogy-dna-bounces@rootsweb.com] On Behalf Of David Schroeder via Sent: Wednesday, December 16, 2015 12:42 PM To: genealogy-dna@rootsweb.com Subject: Re: [DNA] My Raw Data Files - Comparison 23andme vs AncestryDNA I do have issues with a lot of pileups on chromosome 15: Number of Segment Matches on Chromosome 15 - large number of pileups Original 23andme: 603 Fixed 23andme: 482 Fixed Ancestry: 197 Compared to number of Segment Matches on Chromosome 6: Original 23andme: 75 Fixed 23andme: 82 Fixed Ancestry: 84 It is an interesting situation. I expected fewer matches on my fixed kit, but I did not expect so much less on my ancestry kit. Any ideas why? I am going to dig deeper into the data. David