When Frank built my Gen2 last year he sent my transmission to Robinson for a full build which also included the full Cryogenic Process and Polishing. It looked so good, it was a shame to hide the dam thing inside the motor. Man, that Bike shifts Flawlessly. My Gen1 has the tranny undercut etc. and until I had the Gen2 built, it was the best shifting bike I ever Rode. The Gen2 is just a step up on my Gen1..In Every Way..