Recently I bought a secondhand Classic Aeron Chair with what the previous owner told me was a broken lift-lower lever (referring to the lever, or "handle" that's on the right-hand side of the chair that is pulled on in order to lift or lower the chair)
In its current state, the lever is still functional, albeit unsightly so I figured I would try finding a replacement part to get it fixed.
The main problem here is my lack of knowledge about these chairs, the handle that you would normally pull on isn't there and the "stem" that I assume it is attached to is supposedly broken, although the fraction looks deceptively clean leading me to suspect that maybe all I need to replace is the handle that sits at the end of the stem?
TL;DR: How should I proceed with fixing this Aeron lifting/lowering handle?
Any information on this issue would be much appreciated.