Glad to hear your problems!
I just joined this forum and started a thread on converting my Onan 5.5 to LP. I have a Raptor toy hauler and want to convert my genset to LP from gas (actually to tri-fuel). Already converted a Briggs genset to tri-fuel and was amazed at how simple it was and how good it ran. I have plenty of room for extra propane tanks, which I already have and keep stabil in the fuel tank. If I go to tri-fuel, I will drill out the carb that is on the genset now but would like to replace the existing carb with one already set up for LP to see how it works. Already have a Garretson low pressure regulator and an electric fuel shut off. I do alot of dry camping so I would more than likely use a dedicated tank just for the generator. From what I researched, fuel consumption is about the same gas v LP and you don't have to worry about running the genset under load about an hour a month if you don't use it. Any cons I should consider besides what you guys already discussed?? Also, does anyone know what number the LP carb of the 5.5 genset is so I can start looking for one, rather than pay $600+ at a dealership or ebay? Thanks, Jay