| Mine is the QB one, infact my bike (and their own 999s) were used to develop the carbon range that QB now sell.
Mine fits fine without spacers and does not catch the tyre at all. The only mod I've done is to use a small bolt and nyloc to fix it to the original plastic chain guard rather than the velcro they suplied.
This is on the early swing arm. | 
Threaded Mode