I have a 1911 with some FTE problems. The casing is getting stuck horizontally on the extractor, and sticking there. It's been happening about once every 3rd mag or so, on Chip McCormick, SA, and Wilson Combat mags. I generally have to rack the slide 6 or 7 times to get the casing to actually eject, it just stays stuck until then. Any ideas, and what other information might be helpful in diagnosing? My first thought is to simply replace the extractor, but could it be an alignment or fit issue? Any advice would be great, thanks.