I thought some of you might find this interesting. After somewhere in the neighborhood of 5000 rounds, my S&W1911 started to have problems. About once every 25 rounds, the empty case was falling out of the extractor prior to hitting the ejector. This would leave the case to be smashed by the slide as it moved forward to chamber the next round. After looking at every other possibility that I could think of, I decided to remove the extractor from the slide for a look. No, I do not have pictures. I was amazed at how much black tar like **** there was under that extractor. Even the coils of the small spring that drives the extractor were gummed up. I shoveled the crud out and sprayed it down with some cleaner. So, if your S&W1911 starts to give you similar results, you may want to check out the underside of the extractor.