Hello Christoff!
If the ETZ was long years parking fork oil like "batido de chocolate"

first remove and clean well lower leg, stanchion,...change the oil fork seal...reassembly with new fork oil and fell again.
Mmmm ...fork oil capacity , oil SAE and preload can be particular setting...your weight, drive style...
For example:
- Fork oil SAE 10.
- Maximun fork oil capacity: 250cc (8.79 fl oz)
- Cheap soft preload can be inner piece ballberarings broken.
Best regards, Manuel.
PD. Sorry for my "bizarre" inglish
