Im surprised you caught that good for you.
The rear torsion arm torsion bars are stiffer than the rest of the tank. The original supplied mato gear boxes are heavier than thaigen ones, and i suspect the cross drive dklm uses is even heavier. I am going to drop a brick of lead in there, really a bag of shot and see if that helps. The tank is getting heavy and i dont even have metal tracks yet.
wait till you guys see the tank operate and come to life eventually, and the cammo job coming too.