Part of the problem in CT, was that the ethanol delivered was greater than 10 percent. There were places that were tested as high as 30 percent. I am not aware of ethanol problems related to the Yammi 4 stroke, but thats only because I don't fish with anybody that has one.
There are several threads on these issues on thehulltruth as well.
I would think that a new boat with a new gas tank would suffer the least amount of problems. THe older tanks have a film on the inside that is scrubbed clean by the ethanol.
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