Tell me what is happening here. If I use the 10rd. mags that came with the pistol it fails to hold open after the last round. Both ten rd. mags do the same thing. When I use a 13rd. mag from my g41 it works like it is supposed to. Are the mags worn or is there something else I am missing. Has this ever happened to you and what did you do to fix the problem besides buying new mags.