I just bought a Marlin 1894CB lever action rifle (.357) at a gun show. The first time I tried to run some ammo thru the lever jammed in the full-open position. Can anyone tell me what to do now? I sure hope I didn't buy a lemon. I "thought" I got a good deal. The rifle looks almost new. The ammo was .38 wadcutters, which probably contributed or caused the problem, now that I think about it.