Just got my Kel-Tec out of layaway, took it home last night and cleaned and polished it up a little bit. One thing that concerns me is a piece that fell off the gun while cleaning. Its the little insert on the slide that holds the recoil spring, it fell backwards out of the slide. the pressure of the recoil spring holds it on there fine, and I ran 150 rounds thru it today without a hitch, other than a round getting locked up on another round in the magazine. Is this normal or should that thing be welded in there?