I went to the range today and after I got all set up, I started to load the mags to capacity. I tried to insert the full clip into the the gun and it wouldn't click or stay in the gun without really pushing it in. when I would get the mag to click in the gun it was almost impossible to rack the slide. I took out the mag, locked the slide back, inserted the clip and hit the release and the gun shot fine. I then loaded the next clip to 13rds and inserted the mag and it went in like it should. no force just a simple click. the slide would chamber a round but it didn't feel smooth. I kept taking out a round out of the clip and would try to chamber a round. then finally at about ten rounds in the clip, the slide would chamber a round smoothly. what do you guys think is there something wrong? any suggestions? I haven't cleaned the gun yet and it only had about 50rds through before its last cleaning. all together including this trip it has about 400rds through this gun.