Now I've never rebuilt a trans, but I'm gonna have to say carb work on our bikes is easier than that. I'm not talking about changing cfm's for the guy with boring out his carbs. Just switching jets and needles and maybe a shim. I agree there doesn't seem to be any exact science. But with dinqua's site and hopefully some good advice from those that know more than me he could tweak a few more lb-ft and hp out of that twin.

Blue/White, Battery Relocated, 155/45's, AI removed, Cocktail shakers