Two things that I'll say about the trigger pin removal:
1) Use 3 hands. A vise, gun clamp, or other fixture to hold the revolver is INVALUABLE!!! It always feels like a job that requires 3 hands. The brownells 'clamp thingy' works great to free up a hand, but I spend more time putting it on than it's worth. A vise will hold the revolver in place for other assembly/disassembly tasks too, so it's really worth it just to clamp it in from the start.
2) Direction is everything. I sometimes catch myself trying to press the trigger pin out from the detent spring side, and after about 5min of cussing at it, I remember how to do it the right way. The trigger pin is a LOT easier to remove if you press it out from the opposite side of the detent spring. Equally, you have to press it IN from the detent spring side first.
I lock my Ruger SA's upside down in the vise, then use brass punch that I flattened to a screw-driver-like flat tip to depress the detent spring with my right hand, and then simple pressure from the pad of my thumb against the "trigger end" of the pin will pop the pin out far enough to get ahold of it. No punch, no hammer, no 3rd hand, no cussing...