That's pretty funny cause after the last race on my 01 200 EXC, noticed my left rebound adjuster was leaking oil. Have you had problems with the fork seals yet, cause man I have! I would really like some info on this myself. :think:
Not sure how much - it's not a lot. I'd be tempted to see if it will stop on it's own accord. I did the same thing without knowing and redid my level but you loose a bit of oil off the springs so it was hard to say how much is in the rod.
I had the same problem after servicing my forks. Be very carefull if you pull the rebound adjuster out! It has a spring with small steel balls and they will get LOST! Been there done that! I cleaned mine added a dab of grease to the o-rings and it was good after that. But then again the small amount of oil that was in the tube had puked out by then.
Use 35mm film to clean your fork seals when they leak, it worked for me!