Just tried fitting pinions with the kit spur (84t, 48dp).

Trying to get at the pinion set screw with the motor in it's position is a pain in the ar$e, the hole underneath, just like the T3'12 in central, trouble is, now the motor is more central, so is the pinion. It's teeth are right above the hole.

So far I have removed the motor and put the pinion on, once the edge of the pinions I use (RW Racing) is flush with the face of the pinion shaft I know it will line up perfectly.

On the plus side;
Using the new mount I managed to get a 35t pinion (4.56fdr) down to a 15t (10.64fdr) before the motor started fouling on the layshaft mount. It's on the limit of access to the motor screws though