Vibration in front drive shaft?

[Lockout]

Went for a crawl today and noticed near the end of the session that I seemed to have a vibration in the front drive shaft, enough that it makes a little wirring sound. I noticed this after there was a big squeal from my slipper clutched which i have locked up tight.
I can't remenber if this was there before but I don't think so. There does not seem to be any damage anywhere and I pulled the dig out and there was no broken peices.

The vibration seems to start at the Cup driveshaft Yoke.

I don't know much of the innards mainly just been working on the setup, any ideas? Should I be worried at all?

Any help would be great, I really don't know what to think and no one has one around here I can compare it to.


Cheers
Lockout

[twistedone]

check out the bearings