I've gotten parts from TC before, it's the exact same lock used on the Hawken rifle. I suppose I should have asked people who know better than I do about it first, but I knew the spots that needed slicking up and used a light touch on them. It turned out good for me this time, must be living right.
I did my work in the interest of using the set trigger. The set trigger was light before, and is lighter now, but that's what I expect from a set trigger. The main trigger pull has always been unusable, and I've come to accept that. I've never measured it, but it's heavier than any gun I own, including shotguns and double action pulls on pistols. The only situation I could envision using it in would be a snap shot on a running animal, and that's not a shot I'd ever take as I don't have the skills to make it an ethical one, especially through open sights.
I hadn't thought to do a drop test though, that's a very good idea.