I just bought one Hangkai on ebay. I took it to a mechanic to check it. It starts on first pull. Mechanic said it was good. I also was able to register it and get title for it in Texas. The company who sold it to me was very fast answering my emails and sending the required paperwork. I only had a problem: They sent the serial number tag from China. When I attached it to the motor I damaged it and they are not answering me about a replacement. Sio if you will attach onem just be carefukl with the glue that you use. I used JB weld and it covered part of the serial number. I don't know if this will be a future problem.