Here are two photos of the Ohlins from the donor bike.
Does anyone know what model this is? Is it, and the front, worth rebuilding or better to just get Tractive from Beemer Shop? The donor is a 1999, and the shocks may be that old.
Also, note the clean area just above the black knob. Turning the knob all the way raised the height just that much but changes the damping. Is there a way to adjust ride height?