I bought the sd40 bout 3 weeks ago have put about 500 rounds through it since, was cleaning it today and noticed the little hook that pulls the spent cartridge back out of the chamber (sorry not sure what it is called) located next to the firing pin is loose and moves back and forth not sure if it suppose to be loose but when I pull the slide back about the 3rd bullet jams and it's never done it before any advice? And apologize for being in the m&p but looks like there isn't a SD forum yet, that or I can't find it, thanks for the help!!