Your point is well taken. Gasoline in being "double blended" in many areas. Because of tax credits, %10 is blended by arrival at terminal/port then %10 blended again at local supplier/delivery co. Why don't your suppliers make the diaphragm out of a material that withstands ethanol, for the YF? E-10 is not going away soon.
Also, what carb would you recommend that would have good MTBF for this engine.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn