I did do the tach adjustment a couple of days ago. Turned the sensor in until it touched the flywheel and then backed it out about 1 turn, I noticed a more stable reading and it responds to the throttle alot better. I recommend all Kama owners adjust theirs, mine was out about 5 turns! I also thought about the throttle linkage also, im gonna get my wife to hold the pedal wide open while I check to see if there is any more throttle left at the injector pump.