For you guys with the leaking diffs, are you sanding the face of the diff half at all?

A bit of a shameless plug, but check out about halfway through this clip and you'll see what I'm talking about: http://www.youtube.com/watch?v=RdJYwEDxQ7k if you smooth out the face of the diff case a bit, it tends to help keep it from leaking.

Brandon runs for AE and I gave him a hand shooting a few clips on some common tips and tricks for the RC8B, the vast majority of them apply to the E as well, so you may find some usefull stuff in there.