I just had the replacement spring preload kit installed (by my bike shop), by it still feels crappy, i got the firm kit from manitou, and it feels impossibly stiff, I weigh 170lbs (77,5kgs), plus it builds up air pressure, is this b/c the o ring in the bottom left fork leg!? On a final note the rebound is really slow, and I've been told that the damper is some kind of press fit, meaning that it cant be re shimmed. Has anyone tried 2,5 wt oil in these forks!? I'm no mechanic so I'm basically just relaying the info i got from my shop and the danish manitou guys, so if there's anything I've got dead wrong, this is why! Thanks.