Dear Board Members, I stopped by a friends the other day and he was trying to find magazines that fit his WH 1928. It seems that magazines that fit just fine in WWII guns & 1921's do not lock-up in his WH 1928 F/A. Before I start to cut metal on the mag catch, is the adjustment to the magazine catch done the same way as fitting a f/a mag catch to a WH semi? Right now the top side of the magazine catch is higher than the hole in the magazine(s). The answer seems obvious (as I don't know any better) but I find it harder to uncut metal than to ask in advance. Thanks, Grasshopper