Thats what I reckon. There is a a spring kit you can get which is standard on most defenders through the ages but isn't on a few. It is like the guy whose job it was to fit these springs went on holidays and no one did his job! Land Rover Defender TD5 Clutch Pedal Assistance Spring KIT EDP7510LKIT | eBay
Apparently this makes a big difference to how heavy the clutch feels.
In saying all this I will still pull it out and apart and see if it can be identified and what the fault may be also............... When I get time

