On my bike it wobbles around like there's no tomorrow. I tested the fastners, all tight so it looks like it's designed to do this, is this right?
You need to fit some washers as detailed here Motorcycle Info Pages - MTS1200 DIY Mods > MTS1200 'Wobbly' Bits
Be carefull , I tightened mine up with washers and the light fitting broke away from its base (I only realised when i got a brakelight fault so had to check the wiring) I superglued the bastard back and shoved it back in and its workin so far.
I inserted the spacers to successfully reduce the movement in the tail light and number plate holder but found over time the tail light itself became very loose. Fixed by pulling the holder apart to reveal and tighten the two screws that hold the tail light onto the holder.