Originally Posted by BigDogRacing

If you're shimming the upper bulkhead parts that retain the diff bearings, then you're doing something wrong. Same goes for the top deck, but its not impossible... I'll give u the benefit of the doubt on that one.

Originally Posted by Owen RaCing

He's just fresh out of the Tamiya camp, its a Tamiya camper practice to shim the upper bulk off of the bearing holder.