Kevin, Ed, Thank you for returning my engine, i apprecieate the warranty service on it. I however have bad news. I installed the engine on my jet, went through the priming sequence, started it, NO PROBLEMS, ran for about 5 min alternating from idle to full, then shutdown on me, " i attribute this to a possible air bubble" OR The next saga: upon cool down the starter started squealing " o-ring" then the o-ring deteriorated and the starter engages but does not grab the nut. I dont know if the engine ingested a peice of the o-ring or not, engine seems fine. I dont think i am qualified to install the new o-ring, i realize that you cannot tell when the o-ring will fail, but this engine has given me nothing but heartache. I am in the process of moving to Florida, Couldnt fly much in september anyway but i was wanting to fly before i went. I am going to take this engine back off the plane and give it to a friend of mine. He can take it to metropolis. PLEASE install the o-ring and test it at the meet because the starter motor itself could have become misaligned and caused this also. He will get the engine back to me. Thank You Russ