That said, in a brick and mortar location with an are wide power outage, with gas stations without fuel and or without electricity that small power reduction claimed changes to a huge power addition - to zero power on gasoline.
I can always get propane and the OP likely will always have NG. Not so with gasoline.
As I have frequently said, I have zero RV experience and thus am only talking about my personal experience in a brick and mortar situation.
The US Carb forums can provide additional suggestions about spark plug gap and exhaust temps, etc. These have never been an issue with my generator. (IIRC, I did change the gap on my plug when I installed the kit a few years ago.)
A seldom identified effect of converting to propane or NG is that one has essentially 100% confidence that the generator will start immediately if required - and therefore power outages cease occurring in your location. YMMV :B
