My worthless piece of *#!t engine is now purring nicely.
I had a near new looking OS FS-26 which I had picked up at a club swap meet. I tried and tried but I could not get it to rev past half throttle without dying. I tried different props, different fuel, and much time monkeying with the carb. I was thinking that it may have never been broken-in or broken-in improperly. Finally pulled off the cam cover and it was hard to tell but it looked like it could have been off a tooth. Pulled the head, etc. moved the cam one tooth, put it together and it fired immediately and was running like a champ. I can't imagine why someone would have fiddled with the cam on such a new engine, or if it had come from the factory that way and the previous owner gave up on it.:spinnyeye