Al and I originally did this bike for Danny a few years back. At the time, it was running okay so we didn't do much with the motor. However, he's always had a little trouble keeping up with the pack. He's owned the bike for over twenty years and wasn't ready to turn his back on it. When he asked us what he should do. We told him, the only real cure is the S&S 93" Shovelhead. It's a different bike now, what a great motor.