I've got a 94 xr600r, runs flawlessly but in the last week or so has developed a loud click type sound coming somewhere from the swing arm mount area I think. It's not constant but fairly consistent upon compression of the suspension. I have scoured over the whole bike and can not find anything out of whack. Rides fine on the trails. Sounds almost like a large size nut on a string that keeps whacking the frame!?? I know its hard to diagnose without hearing it but any ideas or previous experiences with the like would be appreciated!! Thanks All!