Deeangeo, my rifle has a lift ramp identical to yours and it is exactly at that ramp that the cartridge shoulder catches and the whole thing locks up solid. I will have a look at my Model 1910 tonight and compare the difference. Now before you go altering anything on your rifle let me modify mine first, as mine is an old Greek military model that is pretty corroded and has been dicked with although not at the lift ramp. I got it for next to nothing and therefore it won't matter if I damage mine trying as it is mainly for spares. Give me a few days as I am flat out at work at the moment.

Waidmannsheil.