OK....how are you guys determining that the float is off? I went to the link someone here was kind enough to provide on Kihien tuning. I was glad I did as it cleared up the incorrect info in the Yamaha manual. The Yam book says to turn the carb upside down and measure the float hieght, ensuring that the tab is resting on the pin, but not depressing it. Well, this is misleading, since as soon as the carb gets past 45 degrees, and the tab is resting on the pin, it will fully depree the pin as 90 degres is approached. The kihien info clears this up (as I suspected) by saying you should tilt the carb over til the tab just touches the pin, then measure. Mine is right on the money at 7.5mm, when measured this way. Basically, the seams of the float are also level with the machine seam of the carb (surface the float bowl mates to) when viewed from the side.
Are you guys using this method?
I am riding today with 178 X 48 with clip on #1 groove posistion. My oil is R-50 @ 32:1 . I am only getting 3-5 drips out of the PV vent line, and no mess out of the silencer.
A shop I spoke to in Florida suggested riding it very hard, and reving it out a bit with fuel off before shutdown. (he was clear about not running it out of fuel, just getting it to lean run a bit) He thinks crap left over from the last ride (from being somewhat too rich) is being throw on the plug, and the temps are not high enough to deal with it, especially since the plug was already operating borderline fouling condition. Makes sense to me...
Later, John