How perfectly should my Onan run?

I don't mean to be a smart *ss but are you having any problems running equipment with the genny? Any problems starting it, reaching maximum output, excess fuel/oil consumption, exhaust smoke, overheating, noise, spark plug fouling, etc? I have the same unit and I can't hear yours, but, mine does change speeds/voltage slightly depending on load, altitude, temperature, etc. It has never failed to do what I ask it to do. Years ago I learned not to try to fix problems I don't have and I spend my time resolving the ones I do. Could you be expecting too much? Just asking. You have a very popular genny. It might be worthwhile to listen to others and see what they sound like before you condemn yours.

Chum lee