I have recently changed my belts, adjusted my vales and replaced a set of forks..( the valve equipped one did not have any rebound in it.. sagged all the way out..) well took it for a ride on friday night.. and on the way home keeping up with traffic.. I noticed I was doing about 82 MPH.. and the bike was smooth.. used to vibrate a bit at 70... seems it will do 60 at 4k and 70 below 5k and 80 is just over 5k... and this is at 1/4 throttle!!!! ( i don't ride H*%% bent for leather WOT like some folks) all I can say is wow!!! Take your time check your belts and marks carefully.. don't rush or skip... adjust valves and the recheck.. adjust again,, recheck.. and then check at t1 and t2 when checking each side.. glad I did..