Everything negative stated by previous customers is true. Received a go Kart that will not run. Immediately submitted service ticket as required. Several days later Jeff Backer requested videos to help diagnose issue. After submitting and resubmitting countless videos over six weeks I have not received one piece of advice or suggestion. I have only gotten 2 response emails requesting more info or better videos. When I asked to speak with Customer Service, I was told everything must go through Support, but they do not respond. The last email I sent was 12 days ago and still have heard nothing. 3 carburetors later and still not working, Motobuys is the much better choice.