Some interesting problems here..

[Danjal]

Just got back from riding. Its definetly fuel starvation to the carbs. Im assuming my petcock just went south.

Bike will not go over 9k free rev. Wont go over 7k with me on it in ANY gear. I down shifted to see if I could get over "wall" to the fast system in the carbs and it ran fine for a few seconds then died and had no fuel at all to restart until it sat for a min on "PRI".

Clean tank, clean carbs, known good tune, new plugs, new lines with no filters installed.

Pretty much leaves the petcock suspect dosent it?

[Danjal]

New petcock in... STILL persists at staying at 9k maximum on free rev. *Bangs head* I installed a second good used petcock from a friend.. same problem. So thats 3 petcocks all the same problem. The only other thing I could do would be drill one of the suckers out and leave it as an elbow off the tank, but I think thats unnecessary at this point. Recleaning the carbs...again.

Any Ideas?