Gearing questions

[Miggers]

BITD I used to race 4WD(Optima Mid Custom),but I'm just getting back into driving again(I am 51!!!).

Ok,I'll admit it,I'm an old git compared to some of you young 'uns.

Anyway,I've got myself an old Mardave(ok,I'll admit that too),it was a Meteor but it's now a Cobra.

My local is a mixture of grass,tarmac,hardpacked clay and loose fine gravelly soil/sand over a hard packed clay base.

My Cobe runs a 27turn(yeah,still on Ni-Cads and brushed,old skool or what)and is on Schumacher mini spikes.
It's also still on 32dp gears for the pinion/spur and hasn't a slipper fitted yet(that's being sorted at work),when it does I'll go upto 48dp,lots smoother and quieter.
I've got a 12tooth pinion fitted and whatever the stock Cobra spur is.
The wheelspin is mental on the loose and hardpacked(the diff.is set up ok),
but on the high grip it's fine.
I know a 27turn has plenty of bottom end torque to punch off the line and out of the turns,but have I geared it too low with a 12tooth pinion?.
Would I be better with a bigger pinion,say a 15,16 or 17 tooth to let the motor's torque do the work but lessen the wheelspin?

With 4WD and a 27 turn,I'd have geared it low to sprint out of the corners,
but 2WD has a lot more power to play with,you're only driving one gearbox for a start.

What do you boys do with your modern Cougars,22's and B4.1's?
Brushless must be a nightmare to get the power down with unless you gear it correctly!!!

Cheers.