Remove the fork leg from the bike (first crack the cap lose)
Next untwist the cap and compress the leg completely
Next dump old oil out.
Next compress spring 2" to expose lock nut on on cap, remove cap.
Next remove spring and spacer
Next pump the inner rod piston a few times to release the rest of the oil
Next let sit upside down for 30 minutes (to drain all the old out)
Next drink 2 beers
Next Take your Cap and set the rebound adjuster 1.5mm up from flush.
Next pour in oil. You want it 110mm from the top of the leg with the fork fully compressed. Meaning a 110mm air gap up top.
Next install the spring and spacers etc.
Next install the cap back on the rod. Make sure the preload is all the way up (all lines showing) and the locking nut is all the way down on the rod so the cap will twist on as far as possible. Once twisted on as far as possible lock it in place.
Next extend the leg and screw the cap on to the leg.
Next put back on bike.