Just got my v1 up and running and it is running real hot. Polini 80 cc mikuni vm20 with a 210 jet. Ev racing exhaust ported bottom end. It idles around 200 but runs in mid 300s with peaks at 420 degrees. I've checked for air leaks and can't find any. Also ive got yellow clutch springs and they seem to be working to well so that the clutch doesn't engage until about half throttle. Has anyone had this problem or know any solutions to either problem.?