Your right....however, separation of two dissimilar liquids will happen with any fuel, unless its 100% alkanes. Gas is a mixture of all sorts of organic crap of varying molecular weights and polarities, in addition it has some % of water. Added ethanol is just one more thing to separate out. Heres how to fix it, dont let gas sit out in the elements for months and months at a time. Dont let it sit in the cylinders and carbs and fuel lines....clean/burn that ish out. Ethanol isnt bad for 2 stroke motors....sitting in your garage for 9 months is bad for them. 2 stroke engines need to be used and ran or stored properly.