BS....a 5000 ft increase in altitude equals about 2 psi. With 35mm stanchions this equals about a 3lbs change in preload, about the same as your average turd. Not alot do 5000 ft elevation changes......nor think they need a fork retuning at such an event (do you tune for the top of the hill, or the bottom....)DirtDivaDH said:Actually the bleed screw is important if you are traveling to places that involve an increase in altitude, which causes an increase in pressure which needs to be released. the problem is that on Marzocchi they continously break. also I believe the 2004 had black stanchion tubes.