I own a few "Guide Guns" in .450 Marlin. I have tried several hammer extensions supposedly made for my rifle. All have worked fine until they loosened up from recoil. I thn get light primer strikes on the first shot, then go off on second. The extension gets loose then presents too musch mass and slop to reliably detonate the primer. Can't have that in the deer woods. I've tried Locktite,Gorilla lue, etc, they all loosen up and cause same problem. any suggestions?