I'm work in PSA, we have a lot of problem with this box with us service and extern garage.
When I've contact PSA assistance, they tell me NEVER mount a clutch except on citroen service. (not even the one in standard exchange "Eurorepar" on citroen service).

I fix a lot of problem with this solution, it's because a lot of clutch (except psa) don't does not correspond to the specification of PSA for this clutch.