Here are a couple pics of my rebuild using a new kit.

no weight needed to balance. Bias is 45% front 55% rear. 50-50 left to right. Total weight ready to race is 6.45lbs. The carbon fiber eliminates torsional twist. It's extremely hard to traction roll and even when it does you can tell it's going over and let off on the power a touch to settle it back down. I think keeping as much weight on the center line as possible is the key. I think that's why saddle packs in line are working better than side by side. Add a ball diff from Marcus and it's a tough truck to beat