I work in a glass plant that makes glass for both oem and aftermarkets like safelite and confirm that oem is held to much tighter tolerance and defect rejection. We always comment on aftermarket runs that there aren't any defects. Before this job I was an owner operator for 30 some years and on the last truck i owned the replacement window had a divot rite in my line of site that didnt wipe. I really wish I could say I miss that job. Not really