Adam,
If I had the joints out, and that were on my car, I would replace. It may function fine for some time with that pitting, but the pitting will slowly wear away on the bearing with every turn. SO, unless you are short on cash, I would get a new one.
Others may have a differing opinion, but I generally would rather repair something once when I have it out, rather than have to go back in later.
Good Luck.
Nick.
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Nick Shumaker
1982 911SC Coupe
nickshu@yahoo.com