AINT SKEERED

iTrader: (2)

I have had this problem with the Moser 12 bolt before but found that there was a hairline lip on the axle where the seal was riding . We smoothened the lip and it did not leak for the last 6 months.
I recently took the car on a road trip to HOuston Texas for School(work) and it started leaking again on this 310 mile trip.
What the hell is causing this? THis is 9inch style big bearings and seals.

Inputs please