I just finished cutting down my service to fit the xd40SC mags and I am haveing trouble with the extensions. They require me to force the mag in real hard to get it to lock in. If I put the stock bottom plate back on magazine fits fine and is maybe even a little loose. I think I remember this being a common problem with SC but can't seem to find that thread. I don't want to remonve any extra material just to make them fit.