I just bought a 2004 Racer X with a 5th Element Air shock...I've been trying to setup the sag, using ~85psi in the IFP chamber. To get approx 10mm of sag(~20%) I only have to fill the main chamber to about 90 psi. However, being that I am 170 lbs and from reading other literature, it just seems that is a lil low and I'm worried about damaging the shock. Heck, one mag that reviewed the 5th said to fill the main chamber to body weight psi...Does anyone have any ideas or any similar experiences? Any suggestions would be greatly appreciated!!