While cleaning carpets and the footwell I decided to set the clutch travel by adjusting the stop on the wooden footplate (145-165mm), not something I've bothered doing before tbh. Much to my surprise the gearchange has improved! I don't understand why but I guess Porsche put it there for a reason.
The small Bentley manual also suggested the clutch master cylinder length was adjustable but this wan't the case on mine.
The small Bentley manual also suggested the clutch master cylinder length was adjustable but this wan't the case on mine.