There is a thread: More ONan2.8 KW questions: carburetor.
There always seem to be LP genset bashers. Read the thread and realize that LP gensets dont have anywhee near the problems that gasoline/diesel generators have. I know as I had two previous Onans and carburetor problems occurred even with regular servicing although I put Stabil in my gas tank to help. The ONAN generator as noted by our Moderator, is a good product but needs service. With my LP 2.8 just an oil change so far. A big LP unit would be used in a bigger B than ours to meet area demand. I will check on the MR HEATER system to extend house LP tank useage.