I will do my homework. Can't understand why I can't make a comment without hurting your feelings. Sorry I spoke on this forum. Just was making a true statement. I guess you are correct all the time. Good luck with your $330.00 Zenoah gas engine. Hope you have a powerfull battery for it's ignition system. It uses a lot of battery for the amount of time it's running. Let me know how it work's out for you.