Using the handy-dandy detail strip instructions found at M1911.org, plus recollecting my walk-throughs from Bob and Shannon at work, I have successfully replaced the trigger in my Delta Elite with a spare STI unit I had lying around and it all went back together and everything works all normal and stuff and I still have all my fingers and no leftover gun parts! W00t!.
This may not sound like much to some of y'all more mechanically talented types, but little things like this compare to an assault on the North Face of The Eiger for ten-thumbed l'il ol' me.
Woo hoo! W00t! Wheee! :)
(This is about the only kind of pistol I've ever owned with which I'd attempt this; everything seems so simple inside, and there are no itty-bitty springs for me to send flying. :-o )