I... I may have found my One True Love!!
Her name is Moly. Moly Paste!
My Locktite 51048 Moly Paste (now called LB 8012 but still 65% molybdenum disulfide) arrived Sunday - 2 days early! - but someone had turned the Spring on early so I had to work outside all week... Finally got around to reassembling the lock mechanism this evening.
It went together well. I used about 0.4 smidgen of moly paste, just enough to put a thin coat on all the mating/sliding surfaces.
I actually added a little more to some of the pivot & contact points after this picture was taken.
I then reinstalled the lock, trigger & guard assembly, barrel and nipple, just enough to be able to stick a plumbing washer on the nipple so I could see if there was any improvement to the formerly 7lb - 12oz trigger pull.
I'm a-callin' it a success:
3-pull avg: 2lbs-8oz!!! Wooooo!!!
Trigger job in a can, indeed!
Thanks again for all the advice, info, & help.