72 Locking Hub and Grease

[mattstoc]

All,

I am well into replacing the rotors and wheel bearings on my 72 Jimmy with locking front hubs. I have three questions:

1. Inside the hub, the space between the inner and outer bearings WAS packed with grease. This seems wrong to me (and a real mess), I have not seen that called out anywhere, but thought I would check. I assume I just grease the bearings.
   
2. What stops grease from migrating out of the bearings into that void?
   
3. Should I put a film of grease on the cogs/gears that allow the axle to lock to the hub?

Thanks in advance