RE: Weird Walbro problem...
I'm in Mexico, and I don't know if they put ethanol in the gas or not. I don't know what they put in it... Apparently something that the carbs don't like! Never had problems with using it in my cars, not even my 450 horse 454 Blazer, though the octane is a bit low for that vehicle, just like it is in the states as well...
I use a mixture of Coleman fuel, Sta-bil, and 20 to 1 oil for a "storage fuel" for my airplanes as I was having a bunch of carb problems. I guess maybe I should use it in my yard equipment as well. I just can't bring myself to fly the Coleman fuel with it's octane rating of 50 to 60, though I have heard many stories such as yours about people flying it with good success.
AV8TOR