I may recover some stuff thats allready been said here cause I read over this thread real fast. I have worked over a few of these now and I believe they were never meant to shoot ultra light promo loads like they sell for nothing a wallyworld,theres no such thing in Russia I would bet. No mater what it is when I get it I drill four .080 holes which is just slightly larger than the original four hole drilling then smooth the action so it does not hang on slow return by hand. This mod will make it feed well with all but the lightest loads. I have also seen a couple the needed that gas selector