So I ordered the Rustler FLM diff through Mike. The diff case is anodized red, instead of the plain aluminum. It was suprising light and easy to assemble. I just added 10k diff oil in there for now, to see if it will leak.
It did come with two thin washers. I didn't know where to use them, so I put in the inside, to butt up against the small O-rings on the output shaft.
