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OK, I'll do that on the other one then. Too late for the knuckle I have on already. I have a few more questions tho~
1) Do I pack the everything completely full of grease? I thought I read somewhere that certain parts\areas should only be coated, otherwise the drag reading would be off?


I only put some over each knuckle bearing and a light coating inside the housing to keep the rust at bay. Birf. is packed full. My logic is to only put in as much as you want to clean out next time smile Folks who do a lot of mud/water pack them full to keep the water out.


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2) I think I threw away one of those metal rings that go on the back of the knuckle, under the rubber wiper. Are those hard to replace? Do I really need it?


They give some support to the rubber wiper and get the spacing right. Could probably cut some out of an old can or sheet metal if needed.


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3) When I bought the truck, I had some chromo axles\birfs installed, when I took them out, they came out one at time, the birfs are not clipped or whatever it is to the axles. Is that a problem? Will the axle slide out of the birf and too far into the diff?


Probably were "martacked":
- http://www.4crawler.com/4x4/CheapTricks/AxleRebuild.shtml#Martack

If not they should be or that could be the cause of your leaking seal(s).