The damper may be goosed, the ‘something’ valve in the oil damper would split/blow without much effort and would need replaced…can’t remember the name of it as I have a set (EVO III from 2000) that need a service…PAce have said they can do a complete overhaul for £90 (including replacing the innards if need be), but I also need a longer steerer and I think all-in it is about £140 – but I need to find £140 to get them done!
When I finally do, they’ll be going back on the RC-200 they came off of in 2004 when they failed!
Can’t recall how the damper is removed, from memory I don’t think it is user-serviceable (can’t remember why I think that though)…the removal of everything else is very straightforward, but I was never able to get the damper cartridge out…