Jshep and all:
As Chuckles pointed out there is a real problem with E85 and your dink motor.
My Merc is 2 years old and wouldn't run without the choke. Had to have the carb rebuilt and the mech said "let me guess....you fill up a 5 gall tank in your dink and it sits there all season." Yup. Well the ethanol causes the gas to separate as it just sits around and this was contaminating my carb. He suggested only using .5 to a gallon at a time. More trips to the gas station but fewer trips to see him!