damping boss....thats the meaning of soft-hard adjustment on the absorber... if normal hi-lo u can't adjust the damping unless overhaul the abs and change the valve inside......if soft-hard surely u just need to twist the damping adjustment knob only....hrm.... when u refer to damping adjustment, are u meaning the spring rates or the damping of the abs.
for spring rate no matter what type or brand of adjustable u still need to buy another set of spring with diff rate to change...