I read another post that said you should go up one jet size if you use the mixed gas. I re-jetted according to the Polaris guide, went from 410 to 390 for -10 to +10, 2000 feet. Polaris jetting charts are conservative so I think i will be fine. I'll just do a plug check after the first ride

We found as a rule of thumb.. the stock jetting in the polaris sleds and their charts is dead on for 10-15% ethanol added to the fuel.

thanks, My friends said that they had never had a problem either. I can't wait to ride it, its getting close........