It took no time at all to sort out the few items the Sachs needed. A fuel flow issue was preventing it from going beyond about half throttle. That turned out to be a partially blocked fuel hose from the the tank. Easily sorted. Then I went out for a few miles to do a road test. It certainly struggles up hills (Particularly hauling almost 200 lbs), but if you do a little light pedaling it improves. Same on the downhill. Just turning the pedals eliminates a slight restriction vs holding them steady. It cleaned up nice, and my son thinks it is cool !