Well I am no chemist I am just relating what happened here when the ethanol 10% law went into effect......maybe they mixed pineapple juice in I don't know.

But those problems I related are real....and if wasn't the ethanol why did the state allow regular gasoline without the 10% ethanol mixture be allowed to be sold Marina's.

I know I was replacing the diaphrams very regular before Walbro introduced the diaphrams that were not rubber.

Here is a quote from a G23 manual

1) Never use any alcohol fuel or alcohol added fuel, or the rubber parts in the
carburetor. If not, the engine will be damaged.
2) Gasoline is very flammable. Avoid smoking, bringing any fires near fuel.
3) To prevent all possible problems on fueling system, make sure to use the fuel filter
which has more than 300 mesh or equivalent and gasoline proof rubber pipe or
equivalent.
Fig.2-A Fig.2-B

As I said, thanks Walbro.