Buy the Kimber mags. I purchased a Wilson mag since they are claimed to be the best in my Ultra Carry II it hangs a round or 2 every mag! My Kimber mag has never FTF. They may be great in some 1911's but my Kimber they're crap.
Maybe in yours (mine is a CDP). I have 6 Wilson 47D mags that I have never had a problem with and I shoot mine a bunch....