I always wondered what it was that would wear out in the stock shocks.
If it's just the oil and the seals are intact...couldn't one simply bore a hole to drain the oil from, tap the hole for a drain plug, and bore a flat surface to mate a crush washer to, then drain and refill with denatured alcohol and move the piston a few times then drain again, and then after blowing out with compressed air (or letting it sit in a warm dry place for a week), refill with the correct grade of oil and install a plug with a crush washer like stock front forks have?
I know it's quite a bit of work, but would this do the trick? Yes I know there are suitable replacements available.