During my 12 K mile service today I ran the bike thru the gears, motor running, while working with the GS-911. I heard, continually, a clunky sound coming from the rear wheel area. I ran the tranny from 1st to 6th and back down to neutral with the rear wheel spinning up to about 25mph. The clunky sound was present the whole time. I stopped the motor, check the rear wheel for looseness, etc but could not find a problem.
I still have the tupperware off so did not go for a test ride.
Has anyone else encountered anything like this?