I don't think "trigger jobs" are as necessary, say to something like, a polish job. Instead of starting to buy parts and simply to replace etc, personally I'd spend the time with some fine grit sandpaper or metal polish and work on all the metal-to-metal contact surface areas, until the innards are smooth and shiney. That usually takes care of any "trigger" issues. There are the adjustable triggers for the 1911, but if you just polish the original, and shoot the hell out of it, that'd be fine for a while. I usually take some polishing compound, and apply it to all my metal-to-metal contact areas, while at the range, and shoot some 100 rounds through it. Then give it a good cleaning and then light lube with the clp and GTG. Self-polishing. hehe.