is there a large hole in the pc's (to big for the frame hole).... i think they are thick w/ a smaller round tit that goes into the pc bracket to make the hole smaller ...like if you stack up 6 quarters up & put 3 dimes on top w/ a hole through the center...the dime side go into the pc bracket & the quarters space out from the frame .
might want to jack up the rear & run it ...I would have sworn my front was bad (shook my hands off the bars ,bad) it was transfering from a bad axle!...only at hi speeds!
the factory slides are covered w/ a black coating, is that what you are talking about ...clean out your carbs & slides & try it ,if it's not better check for air leaks b4 you run it to long!
check your plugs for greying
yeah, looks like you ran outa gear you only gained 2 mph in the 1st slip, the whole 2nd 1/2 of the track ...whats up w/ the r/t's
oops didn't see this """1st onedidnt make the 1/4 165 main jet """