I bought a used Glock 36 and it jammed. The guy said it is either the mag or limp-wrisitng which makes sense because I've just started to shoot without any instructions and I do hold it kinda loose. It's easier that way, less recoil and if I hold it tight It shakes a bit. Anyways, the spent shell didn't eject all the way and the one coming up hit it. Is limp wristing really an issue?