I suspect those engines are worse then the planes.... A fellow club member bought one of those engines... On the first flight the rod broke... He called Richmond and was told by some lady it was all his fault... He must have done something wrong... There engines don't toss rods... He was told to send it back and they would see if it was covered by warrenty.. It would be a month or so before they had a replacement if it was... What a bunch of BS