My G17 guide rod keeps bending to the point of breakage. Usually hald a centimeter from the end (trigger end) I tried installing a T.H.E. metal rod/spring. The gun would fire, but not chamber a new round. I would have to remove the magazine and reload the round in the magazine. I checked with my defensive instructor and a local armorer. I am putting the guide rod in correctly. Also, to be sure, I had them put it in.