I wonder how many of these engines are out there, Horizone jumped through many hoops to fix my troubles as well as sending me an entire engine when they could not replace the ignition My first ignition failed to follow the programing and when i recieved the 2nd engine there was an update to the programing on there website. That programing worked however i was unable to test the old ignition as it was returned in the same box as the new engine. I still wonder if the programing is correct on my ignition when I fire it up i get 3 short flashes of the light and one longer flash when she fires. the engine has huge power for a 19-20lb plane.