I used the advice for sliding a 35mm negative under the seal to stop it from leaking (1998 WR400) However, I'm a little confused after reading the manual. It sounds like there is oil in both the top and bottom parts of the fork. If so, then, I would guess that what leaked out was from the top only. Is this refilled by removing the cap on the top of the fork? Also, to replace the oil completely, do the forks need to be removed and taken apart?