That's a thought and I may do that. I've been fiddling with it and I can advance the throttle without problem and I was able to lift it vertical without it quitting. So I am making progress, but it just doesn't seem to be peaking. The manual says that a good starting place for the needle valve is 2-1/2 turns out. But it doesn't say how many turns for the idle mixture. I know that they don't want you messing with the factory settings but it's too late for that now. Now I need to know how many turns to put me close to within factory settings.