Ethanol free - Gas Sources by State
Go to Pure-gas.org to find stations near you. Also feel free to add any stations that offer pure gasoline that are not listed.
The products I recommend are Marine Grade Stabil (not the pink stuff!) and StarTron. I am in the Metro Orlando area of Florida and our Ethanol issues are especially bad.
Personally, I use "old school" Shindaiwa hand helds and use only pure gas since new rubber parts, gaskets etc are getting hard to find.
Using Non- Ethanol fuel is the only way to completely alleviate all the alcohol fuel related problems since additives will only correct some of them.