I have the 9-position adjustable Rancho 9000 shocks on my Trooper. The "adjuster knob" for one of the rear shocks does not seem to be functioning properly. I can only get the shock to adjust to 7 positions rather than 9. And ... the adjuster doesn't seem to impact the stiffness of the shock at all (unlike moving the adjuster thru the 9 positions on one of the other shocks). I removed and reinstalled the adjuster knob on the shock (while the shock was still mounted to the rig), but that didn't seem to change anything. Anybody have any ideas? Thx ... Fred.