When I took my PA-63 out to the range for its first test firing it kept having trouble with my Wolf ammo hanging up half way through the cycle. There are a couple of things that look like they could be the problem but I am not sure which one it is. I don't think it is the feed ramp, it shows a little wear and has a little roughness to it but is fairly smooth all together. The face of the bolt is very rough and I looks like sometimes the rim of the cases hang up on it. But I think the most likely problem is the feed lips at the top of the clip, which are sharp and leave deep scratches in the cases and I think things are hanging up here. Anybody else had this issue? Should I polish these areas and what type of polishing compound should I use?