Massey 6480 clutch problem

We have a clutch problem on a massey 6480 2007 perkins engined tractor.



Tractor has had a power plate (first split). Then it has had a gearbox input shaft (second split, probably weaken by the power plate faliure).

The clutch now is like an on off swith (neck snappingly bad).

Any ideas?

Massey 6480 clutch problem