Stuart

If you are lighting up the inside front when exiting a corner then go thicker on the front diff... if its power understeering badly (both front wheels sliding out) then go thinner...

If you are losing drive due to rearward weight transfer (lighting up both fronts on the straight) then go thicker on the centre diff...

Thats the limit of my knowledge, the rest I just copy in the vane hope it will somehow improve my driving ability, but alas it never does