Apply global quantize to tracks by selecting the Track, go to ALT+6 (QUANT menu) and then press Digit 8. 'Quantize [G]' will appear
then deselect the Track (so no Tracks selected on the RK008) The screen will then show:
QUANT [G] xx (xx being the timebase)
Now you can set the global quantize timbase which will be applied to all Tracks on which you have applied it.