As you can see from the email correspondence, the Cummins Onan staff is not familiar with the issue so that is the 1st step. I spent a lot of time studying the manuals that came with the generator. In my opinion, Onan increased the fuel pressure to help with the starting issues without redesigning the fuel system components to handle the increase thus causing seals and gaskets to leak.
Cummins Onan is a solid company and will stand behind their products; I believe. Their decision to find (then repair) is the wrong approach to the seriousness of this issue. Leaking gasoline coupled with fumes is a safety hazard in/ around our new homes. unacceptable, unacceptable and unacceptable!
Please write your letters and send them emails. Above all, keep copies of all your correspondences.