Drivetrain play. Is this normal?

[Justa6MB]

Here is a link to a video. I've had a noise coming from the drivetrain. I've only had the bike since the spring. It's a 2007 with 6500 kms on it. I noticed it when I put in the windshield/fairing. I'm assuming it's been there for a long time. I thought it was in the dif, so ended up with a $400 bill to change bearings and no change. So I pulled the u joint boot back, put it in gear and rocked the wheel back and forth. The u joint seems right but lots of play in the transmission. The noise is only there under light throttle at high speeds. Quiet during acceleration and deceleration. Feedback appreciated.

http://www.youtube.com/watch?v=HarCWFcOvLs

 

[Damon]

YES, The transmission has a designed amount of lash for gear-dog engagement

 

[Justa6MB]

Ok, well that's good. I guess I'll put it on ignore. Thanks.