Update. So I swapped my ECU with a buddies and it still bucked. Going to try swapping out speed sensors next week and see what happens. If that doesn't work, then my only option left is to rip into the tranny and change out shift forks, though I can't see how that would help. Any help is greatly appreciated.
:Edit: So I decided to go out and clip the wire for the sidestand switch... odd thing is, it made it better but not fixed. It only bucked once up to 10 or 12k... why would this make it better and not fix it ??? I'm going to rail on it tomorrow and see if it bucks more... but it seemed to help but not fix the issue... I'm at a loss.
I've pretty much come to the conclusion that it's the transmission. I bet your's is too. Shift forks aren't hard to swap out, but if that doesn't fix the problem then you'll have to crack the case and swap the transmission. my engine is currently in pieces in my garage.
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