I don't reccomend putting moly or graphite on the sear. These parts need friction to operate safely and could cause problems. Just my opinion tho.
I agree, at best, you end up with an inconsistant triger pull.
I've done this to polish up metal surfaces, I learned this from an old Smith:
Mix JB bore paste with CLP to get a thick viscous consistancy. Apply to surfaces to be polished, work those surfaces 100x then hose the parts over very thoroughly with carb cleaner, dry and reoil. I've done this to slicken up slides on pistols and to polish up sear parts on pistols before with great success, only downside is that its messy and requires a bit of time.