Having trouble finding the correct air gap and oil level.I have a set of 86 forks that someone in the past has changed the springs. I have no idea who made them .the springs are approximately 4omm longer than stock springs. Also very tightly wound. I have tried the 355mm setting. But have popped a seal.... I think the displacement at the bottom of the spring is pushing more oil up lowering the air gap...anyone have any ideas. ..cheers chaps..