[lnfletcher]

It's true about the residue left behind.
I have a backup generator that I use for my home that only gets run about every 4 or 5 months. I didn't have any trouble until about 3 years ago, and then it was impossible to get it started without emptying the fuel and cleaning the carb. I finally had to replace the carb and then I continued to have problems each time until I began using gas without ethanol and I haven't had problems since.
Even fuel additives didn't seem to help over a period of months.

Just talk to the outboard motor guys about it.