Here's one some of you might want to check out. There's a girl on Youtube who is doing Video on the Colt 1911 45 ACP She show complete step by step to take down the Pistol. Perfect to do thorough cleaning and maintenance. Just off hand I don't have a link for one of her videos but a quick search for 1911 on Youtube should get you there. I'm pretty sure she must be a gunsmith / dealer she has a bunch of videos on the 1911 and other videos.