[Bench Racer]

I have no experience with setting up gears but was carrying on a conversation with a guy that set up diffs and trans for Nascar and circle track guys. He said one of the benefits of "treated" gears vs. a non treated ring and pinion the set up was the treated gears pretty well stays constant. He said on a non treated diff you need to keep a frequent checks to insure the clearances stayed where they should be.