If you end up needing any parts for that thing I've got a new Gas Gas dealer here in NC that's awesome. Extremely trustworthy, communicative, helpful (as in I called him and said I need that thingy that does this thingy in the transmission) and he knew exactly what it was (a tiny circlip) without question and located the right part on microfiche, ordered it, etc no whining. Which, I find, is not standard issue when it comes to trials bike dealers. Let's just say that they tend to be "eclectic".
At any rate, I got mine to stop overheating by replacing everything related to the cooling with the exception of the radiator itself and the water pump. It was either the rad cap, thermostat, or radiator fan.
Good idea on the 9 o'clock shift lever position Sting, I'll give that a try. And try to crash more on the right side. Ha!
"If you don't like my riding, get the hell off the sidewalk"