OK, I couldn't find a service manual for my 03 Z1 so I just took it apart and changed the oil. I used Maxima 7wt oil. I weigh 185lbs and maybe I should have used 10wt but 7wt is what I had available. Anyway, is there anything special you have to do to re-set the preload or rebound when you reassemble the fork, like making sure they are turned all the way clockwise or CCW? I didn't check any of this, so I hope I didn't screw anything up.