I need an 8 3/4 lesson. Better late than never!

Flush out the front of the housing real real real good. Things collect in the passage under the pinion.

The autocraft additive works better than the Mopar. If you use the Mopar to be brand loyal be sure to get 2 or 3 bottles. lol
If you are using the tapered axle bearings leave the button in the carrier. You don't need it if using the roller bearings.
Do not tap the axles into a power loc clutch type unless you want to pull it back out to rebuild the clutch pack.