[HyperFX]

I covered the center CVD's with used driveshaft boots (TD310023) to decrease wear from dust/dirt.
Added longer screws with locknuts on the outer diff cases.
Also, I use 2 set screws on all of the 2mm drive pins.
And, to make greasing the pinion and ring gears super easy, I drilled a small hole in the top half of the cases, and sealed the holes with a small screw. While in the car, the screw can be removed to inspect the ring gear, and to inject gear grease with a small syringe, which also helps to measure the amount of grease used. I've been using these mods for months with no toasted diff gears. As a matter of fact, I sometimes swap the front and rear diffs to get a little more usage from them since they drive against opposite sides of the teeth.