I changed the hub and still all I get is a clicking.

[tweakedlogic]

I thought i broke a hub trying to push some one out of the snow. so I got a used one that I was asured worked. I installed it and still I get the clicking noise. What else could it be? I have also noticed that I am leaking some gear lube I think from the right axle seal. but i don't think they are related. i have checked the fluid level and topped it off, but it was not seriously low.
I plan on going with manual hubs later. But first I want to get the thing lifted so I can stop rubbing my new tires.
Any ideas? Should I change the other hub?

 

[DeRocha]

Swap the driver and passenger side hubs and see if the clicking migrates. If so your used hub is worn (very common).