So when your saying it could be a bad seal your referring to the little rubber o ring seals in the crank case?
Also it's started smoking a lot I'm thinking more than its supposed to, white smoke, looking it up white smoke supposed to indicate burning coolant but I'm not missing any coolant. Jjustv flushed it and put in fresh coolant the other night, hasn't changed level since.
Changed carbs with another carb I got off Craigslist basically the same carb just doesn't have air screw, started idling more stable and it's a lot more respondant to turning the idle screw out, was actually able to lower the idle really low for once, with the other carb after a certain point moving the screw out it woulnts change at all, however same issue, bike runs great, flies down the road full power, no holding back, no hiccups whatsoever then suddenly out of nowhere same fucking thing. Stall,
I keep changing carb configuration up a bit, sometimes for the better, sometimes for the worse, but always the same thing stall, with the best carb setup I've had so far I managed about 5laps up the road and back, it was running so well I almost convinced myself it was working right, but on the last lap, it just cutout in 5th and coasted to a stop.
Vent hose is good.
A yea exhaust pipe, took it off and cleaned out power valve and exhaust port with carb cleaner, checked pipe, no blockage or crap in it, but funny thing happened today, I was idling the bike for a while fucking with idle screw and checked exhaust, there was a thick as oil coming out, so thick I could have mistaken it for grease, I had issues with it running to rich before and leaking runny oil out the exhaust before witch I fixed by moving the needle clip position but nothing like that before.