I shoot lots of IDPA and USPSA with my 1911's and am having trouble with a few magazines. I have 4 Wilson 47d's, 3 Les Baer 7 round, 2 Wilson Elite Tactical and a Kimber 7 rounder. The trouble is one of the Baer and both Wilson Elite Tactical magazines do not drop free. I have 3 1911's and they all fail to drop free on all pistols. I believe they are dragging on the magazine catch if that makes sense. I think I can fix the problem if I gently work the area above the catch cut on the magazine with a light hammer. What do you think?