Just to add another data point to this thread, I am currently changing the clutch on another TD5 that has got 250K on the clock (definitely original clutch) and replacing it with another L.O.F Power Spec Clutch Kit including dual mass flywheel and Extreme Spec release bearing. Comparisons as follows:
Dual mass flywheel movement/rotation at circumference: old = 2.5mm new = 0 mm (firm). The old DMF was definitely loose and getting a little noisy on take-up but nothing serious. There was less movement than the clutch change in my previous post above.
Pressure plate finger thickness at release bearing: old = 1.9mm new = 3.2mm
Clutch plate friction material above rivets: old = 1.5mm (grooves just visible) new = 2.0mm
Release bearing was still smooth with no noise but the finger contact face was very shiny and possibly quite worn
Spigot bearing was significantly worn and squealing
Not sure what would let go first if I drove it into the ground. My guess is the pressure plate finger tips would let go before the dual mass flywheel did but it would depend on how hard you drop the clutch.
