Thanks for the feed back, I wasn't sure if I should use them. I will take your advice and clean and grease them, I grease it when I changed my tire last, and went 14K miles, and it was dry when I pulled it apart.
I used Loctite LB-8012 Moly Paste. I'm thinking of still getting parts so I will have when I need them.
If it was that dry in 14k mikes you didn’t put enough grease in there. Use that moly paste on the flange sparingly but a generous amount of waterproof grease packed in the female splines of the drive.
Find my slideshow in Shoptalk. Rear end service by Chrisj. It will show you what I have been doing for years and years with no wear whatsoever.