How about I send you mine Joe? You get it run like any "normal" .21 nitro engine and I will retract my statements.

If these engines are so different why don't they advertise them as such? Why are they so different? Why should I or anyone else for that matter pay $260+ dollars for an engine that has to be handled with kid gloves? Not arguing as I know that you have way more knowledge than I do on the subject however you have NOT seen my engine run so for you to just assume that I don't know what I am doing and that it is user error seems a little arrogant to me.