Hey all, I have a PPK/S 22lr. Got it used but like new. It's the Fort Smith. Haven't had any problems until now except ammo picky. Was shooting yesterday, put a couple mags through it no problems. Was 3 or 4 rounds through a mag and the gun locked up, slide shut. Didn't eject spent casing and slide won't move. It wiggles a bit but will not slide back any no matter what I do. Any experience with this? Thanks.