Grease the aft lug surfaces
Grease the handle primary extraction cam surface
Grease the f/pin shroud threads & Firing pin cocking cam surface
Light oil on the firing pin spring to prevent corrosion.
I see people shoot an entire weekend and never lube a thing.
They also have a better chance at stuffing a .025" feeler in the primary surface than scrubbing the cam surface.
This work corrects that. Dan literally has developed a niche market around the work, and you have some VERY credible smiths and shooters sending him this relatively easy task because he's good at it.
I'd heed the advice. Just looking at the mechanics of it makes sense. Tearing one down and seeing the contact spots makes more sense.....and having ANY experience with stainless machining seals the deal.