Replace a Rear Spool for a Rear Diff in the EMaxx? A good idea?

[Overdriven]

With a spool you still should shim the ring+pinion, which iirc was what you were stripping. You're just getting rid of the diff cup and spider gears (and making the truck harder to turn) with a spool. Unless you're running only dirt and like on throttle oversteer, or really like wheelies a spool is not a good idea.