Its worth rebuilding. Can't get them anymore from Öhlins, so they're hard to find. I tried to buy a set a couple of years ago and was out of luck, so I bought a set of HyperPros instead from Klaus at EPM Performance. They've been terrific so far.
I would have the Öhlins rebuilt. Their rebuildability is one of the features that make them popular. They'll come back like new. I would send the set to
Öhlins USA in Hendersonville, North Carolina. I've had very good experience with them. (Nothing against Ted Porter [Beemershop], though. I have one of his Tractives on my R1200RS. Nice guy and excellent shop).