Ok, read it. One guy had an engine that could have been a return, and in the same thread someone else has two of them and they run great.. The other thread I posted had quite a few who bought the engine and have good things to say. The NGH 38CC is another example of you might get a not so good one, but most of them are. I have 2 of them and they are well made engines. In any case I want to hear from those who have actually flown this engine.