Oh no! I just saw pics of your Kimber in the 1911 thread... nice looking piece, you've got there. I'm sorry to hear that that's the one that got frozen - though its nothing that a few new mags won't be able to fix, from the sounds of things. Perhaps find a friend/guy you play with who has MEU/1911 mags (stock, or not) and try one of his out?
As to the flared mag well, which one did you use? Sorry, that was unrelated to helping you out here.