Hard to shift at High RPMs

[fastcar01]

On the last trip my bike got really hard to shift 1-2 and 2-3 under high rpms. I have always complained a little about this, but now it got bad. WHen racing I really had to short shift it to make it shift. It just wouldnt shift, didnt matter if I tried clutch or letting off throttle, just didn't want to shift. I had flex drive oil in it and switched to valvaline 5-30, it seemed to be a little better, but still not as good as it should be. WHat things are typical to cause this? Now I don't think this is related, but at the end fo the trip It started kind of knocking. Sounds to me like a rod bearing. I plan on going through it all, but I am afraid this trans thing could be one of those where eveything looks fine. Thanks for the help.

[TwistedSheeRida]

it could possibly be a shift fork but who knows if you changed oil and it still did it than i would take it apart