If you haven't picked up a tunable carb yet, you might want to consider
THIS KIT from T-BoltUSA. He is just across the Delaware River in Fairless Hills, PA, you'll probably have it in two days.
BTW, I run the 93 octane WaWa Ultimate gasoline in all my bikes, from a 50cc stocker to a '91 H-D RoadSofa, with no issues at all. It's less than $20 to fill a 5-gallon can.