At least examine all the mating surfaces. If you see any radial (circular) abrasion or scuff marks this may be a good idea, but I generally see the 2 shapes just slowly polish each other evenly.
If I have any doubt with new products, I lap them in with very fine compound and number them for assembly.
The most common damage I've seen is from geo - the bad rocker rotation allows the lever body to touch the pushrod tube at the end of travel, etc.