Friend had a '60 plate Citroen C3 in his garage today, customer complaining that it had lost the clutch pedal overnight. Car had done 89,000 miles.
On inspection, fluid was leaking badly out of the plastic slave.....new one fitted, bled and pressure restored.
Fortunately, the slave on those is external, so an easy job compared to the 75/ZT. But at least we know it's not just ours that fail prematurely