while they seem to have worked most the bugs out, check your barrel to slide alignment(some have been off center) check your barrel screw for the little lock washer they're now putting on since alot of the early ones(mine included) didnt have the washer and worked their way loose, check your slide release for a little bur that will gouge your slide, and again (as was my case when I got mine back from being fixed) check your guide rod to make sure that its not in backwards lol. Good luck
