I've had this motor for two years and I feel like an idiot.
The Bad News:
The first few months it ran like a charm!! Stock carb and it was purring like a kitten. Then came the bogging off idle. Then came the bogging on the top end. Then it wouldn't start for a year. I cleaned the carb more times than I can count and gave up on it...
The Good News:
A week ago I finally decided to get to the bottom of this and contacted Vince for some advice. He recommended the Mikuni VM26 carb and also the trc pipe and silencer combo. $270 dollars later and I've got massive ruts all across my front and back yard! I didn't "need" the pipe and silencer in the end. I bolted the vm26 carb on and first kicked she fired right up and idled for the first time in over a year! I'm keeping the exhaust because 1) it fits my frame much better than my previous exhaust 2) it looks sick! 3) it sounds sick!
....and to think I was just about to sell my bike for parts