Myth: You need to lower and flare the ejection port on your G.I. 1911 for reliability.
Fact: Mostly, you need to lower and flare the ejection port on your G.I. 1911 if you reload so that case mouths don't get dinged during the ejection cycle. If you don't reload, you probably don't need to worry about it. If you're customizing a G.I. gun, though, and ever plan to sell it, you should have the port lowered and flared before refinishing because people expect to see a lowered and flared ejection port on a customized gun. They think it makes it more custom and reliable or something and will pay you more money.