okay, didnt get much response to my other thread (actually none!)
no worries, my issue is solved.

I have another question that I am sure you guys can help me with.

where should I place my gearboxes? in the front of the tank or the rear?
at the moment I can only place it at the rear, but what I dont like is if I need to crawl over an obstacle the power would be coming from the back...
would that be less power efficient then the gearbox at the front?

please help me decide.