Judge by the gap. Tooth to slab face at position A. Tooth to slab at position B. These two gaps must be within .25mm of each other (they need to be equal by eye).
Loosen the right pictured large arrow (M16 bearing bolts) and adjust via the small arrow (M10 bolts) by forcing the bearing up or down on the slots.
Up moves B up and down moves B down.
Lock bolts once complete.