I'm at the same place with mine and I know exactly what it is. don't put octane boost in there actually put a gallon or two maybe even three of 110 Sunoco... Your problems will be over.. notice when you put that octane boost in their things got a little bit better. I'm not a big believer in potions well it may have helped a little it wasn't enough.. I don't like my idol down as if it had a factory cam in it. When your cam gets Beyond 240 duration at 50 it starts needing a little bit more idle speed not only to keep it idling smooth but to keep oil splashing up on the cam at idle.. I have a 10 gallon fuel cell in the trunk of my car so I usually mix 3gallons of 91 non ethanol with 1 gallon of 110 Sunoco... I've acted all the way off 2 about half that much Sunoco and still shuts off fine.. of course I could just pop the clutch when I shut it off but I'd rather shut down solid...
