I returned engine over a week ago and have not heard a word, as expected. No problem, it just means when I purchase a quality engine for my Giles it is going to have a $310.00 surcharge (what I paid for this crappy piece of junk). Still no problem, I have been ripped off before. If you are considering one of these engines I would STRONGLY suggest you look elsewhere if you value your aircraft. Anyway you guys at Copperhead consider the $310.00 a Christmas gift. I doubt you will pay it forward!!!