OK, I have a new CW9 with 200 rounds through it. I've cleaned it twice and when reinstalling the slide, it doesn't want to slide all the way back so I can reinstall the pin. It seems to get "stuck" about 1/2 inch from being fully seated. If I smack the end, noting happens - just playing with it eventually get's it to seat properly and I can reinstall the pin. Any idea why? Is this a break-in issue? Thanks, Steve