I just bought a p3at still brand new with the serial #[email protected]@. I have several pistols that when you rack the slide they will chamber a round no problem (xdsc 9mm, mpa mini mac 9mm, RIA compact-tac 45acp.......). But for some reason with the p3at, when I try to chamber a round (winchester white box) the slide will not fully close. I have to hit the slide with my palm then the round is fully chambered. I know this is not normal....Has anybody experienced this and any way I might be able to prevent this.....I've fully broke it down and lubed it, what else can i do? :-?