Front diff short valve TSB?

[Boss Hoss]

Took the family on a road trip and i noticed a large quanity of fluid behind my drivers side tire. Looked like it could possibly have been brake fluid but my resevoir was full so i figured it was safe to drive to the dealer. I was in a hurry to get home(had been driving for 7hours with 3 to go) so my service write up is being mailed to me but the explanation went something like this:

Some of the 05's have too short of a valve for the front differential. You were leaking axle fluid, but we put a longer one on so you shouldnt have any problems. We had a tsb on this issue so we are confident you are good to go.

Anyone ever heard of this? I did a quick search and came up with nothing.