Hi, Bought an older, hardly used PM9 this week. The seller said he probably had fewer than 20 rds through it. Said he just didn't like it so he cleaned it and put it away and it has sat in his cabinet since 2006 when it was made. I called Kahr and it was indeed made in 2006. He let me bring it to a trusted gunsmith who verified it had not been shot much at all. We looked at it under magnification and he pointed out a lot of little "polymer hairs" along the internals and said it was not even near to broken in yet. He said the polymer hairs get rubbed off during the break-in. So I bought it. I had it to the range today and put 150 rds through it. No failures of any kind and it is wonderfully accurate. And the polymer hairs indeed were rubbed away. But I also noticed two things that worry me and I'm wondering if the pistol needs a trip to Massachusetts to visit Kahr. 1. One of the rails is a kind of chewed up. 2. Slide and receiver do not meet flush at the rear. The receiver extends a bit beyond the slide. Do Kahrs normally overlap like this? Should the fit be more flush? What do you guys think? Are either or both of these conditions normal? Should I send it to Kahr to have it looked at? Thanks.