Built diff with Associated Diff Lube. It was a little sticky, but a few minutes rigged into my drill press got it smoothed right out. Used the Associated Black Grease on the thrust bearing.

Time to bitch. Just about to start putting together the bits for my M05 sway bar. Looking at the instructions, it shows 4mm must be hacked off each of the ball cups. Just wondering why, since Tamiya actually makes ball cups in the shorter length.