I got my sons turned almost all the way down, had a 14t from sprocket and changed it to a 12T. does much better on take off especially with the limited throttle on it right now. Might change out the rear sprocket as well. I think i was as happy as they were. Cant wait for it to warm up and start riding more with them all. Will have a go kart as well as both ATV's... so All 3 can ride now.