i just got my hands on a trek fuel 90 at a bike swap and it has a rock shox sid xc hydra air fork on it which seems to need some adjustment. seems like it just needs to have the air pressure increased... feels realls soft and i was told that it was just set that way cause the guy's 120 lb friend was riding it... i was wondering if anyone had a manual for this thing... i think it is a 2001 model because it is the hydra air model and i heard those were only produced 2000, 01. it has two schraeder valves on the top of the stanchions under black plastic caps. i honestly dont know a ton about adjusting these things... but i read that on these forks that both of these valves are for the ?positive air? and that if you just pump them up the the right pressure (about 130 psi for a rider about 140 lbs or so) that the negative air pressure will adjust itself...? is this right? thanks for your help mountain bike gurus.
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