Just replaced the passenger side rear wheel hub. I've never done this before. When pulling the hub off the axle shaft came out partway. I put it back in and finished my reassembly. My next job was to change my differential oil. Pulled the cover off and saw that it might be pushed into the differential just a bit too far. Should I put the axle shaft into the hub first then push in and assemble? It looks like it rubbing on the gold piece in the center there. (sorry dont know the name of it). I just dont want future problems to come from today's fix. Thanks for your help.