I have an XD40 and I'm having some issues with the kit. I did install it myself and I'm pretty confident with my mechanical skills. The gun fires the first 11 rounds just fine and then doesn't fire the final round. It does after pressing the palm safety and trigger safety several times and then randomly fires. I have attempted it with all 4 of my magazines and the same issue happens. I'm curious as to what might be causing this and if anyone had any advice. I'm ruling out magazine issues for now. I even load two rounds in each magazine and then attempt to fire the last shot and it doesn't fire, so it is definitely a last round issue. Please Help!