Just tested it out today. Geared at 3.8 at the stock timing, the motor is incredibly smooth. I greatly prefer to the Revtech with HT and the D3.5 with HT that I've compared it to.
The crazy thing is that the manual states that the motor is designed to run up to 212f! I was hitting 150f earlier today but I noticed that I never once had that "burnt electronics" smell that motors get when they hit that high temp.