I had a couple problems with my engine. I talked to Ed and he had me send it in to him. He worked with me and I will be a returning customer to JS engines (Maybe clutches/pipes/.23 who knows
) but I have NO complaints about this engine. at all. Great power band, run-time and most importantly customer service. Not many other engine companies can you call the company and actually talk to someone who knows what they are talking about and will help you as much as they can. JUST my .02.