Thanks for the pointer, SuperJ. You guys are lucky there in corn country. TX has no pump stations for E85. It does show Hiperfuels as a source though, but even deducting the $20 HAZMAT fee, it's till mighty expensive at $70 + tax for 5 gals. Methanol is only $22/5gal for me.

I think I'll stick with straight methanol, 5% oil and maybe a little bit of nitro to help with transition.

BTW, I just got a reply from Frank Bowman. He does have rings for the dual ring Ryobi 31cc - that should give even better compression seal.