i've been very successful repairing those pits with JB weld. It's a pain in the ass, but it can be done. Gotta clean it really well, and remove the rust with a wire wheel, then build it up in stages, and sand it down. A new fork seal might have gotten torn up, but you'd see it pretty quick if it did. what really happens is that pit holds the fork oil when it's under the seal, then lets it out on the top side when it pops back up. YOu'd be amazed how much a little pit will brng back up with it over the course of a 10 minute ride. Of course, if you can find a new fork for the right price, so much the better!