Mikey:
Thanks for your deep and abiding concern. The heart/lungs transplant analogy is an appropriate one for that old 5-pack-a-day chain smoker of a Kimber Stainless Gold Match 1911. It is a curious situation. The trigger has wear on it that I don't see on my other 1911s. For example, the sides of the trigger bow have notches worn in them. The contact surface where the trigger meets the disconnector was bent, and grooves were worn in that area. Given that I've never monster mashed the trigger or used anything heavier than light target loads, it's odd that I'd be seeing these problems.
I've never liked the trigger pull on that gun and I thought it was time for radical action. I've polished everything there is to polish, and yet there is still creep after the grease has been on it for more than a couple of hundred shots. By the way, the 'smith told me about the same thing you're telling me but I've insisted that all parts need to be replaced because they've all been oddly worn or modified to some degree either by polishing, honing, or bending (in the case of 3-prong spring.)
This will be a good test of how good this local gunsmith is. He specializes in 1911s and I hope he can redeem the ol' Kimber. Its new life will likely be one of shooting the Marvel Conversion Unit for bullseye, and full power 230 grain ball ammo for fun.
As far as whether it's justified, I'd say yes. I use this stuff a lot and I want it to work perfectly and enjoyably.
All is well otherwise. Questor Jr., has to spend the winter learning to shoot his .308 so he can go on a hog hunt this spring.