I too have never had an issue with the a shell getting caught - however, I did send my whole gun to Jeff for the lifter, opening the loading port, etc. A friend tried to duplicate my gun by purchasing parts and installing himself and I can tell you his gun is not the same. I'm not sure exactly all got done to my gun, but there are some little tweaks (cleaning up of edges, fitting, etc.) that were done while my gun was down there that you won't get if you just purchase a lifter and throw it into a receiver that you opened up. While I don't think you need yet another recommendation for Jeff - he's got it from me.