They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.
Cool. It looks just like the regular FLM diff but with the extra recess for O-rings around the axles. That's where it leaks from the most, so I hope they are a tight fit.