I have a norton 4k/8k combo hone.
By jointing the edge, do you mean flattening it on the stone? The only video I could find on it a guy shows totally removing the bevel to get the blade flat before resetting the bevel.
It did have rust when I got it. I sanded it by hand as much as I could, starting with 220 grit, and progressing up to 2000 grit. Wasn't able to remove all the pitting or staining tho.