Rattiva II has a distinct rattle from the clutch/gearbox when in neutral and idling; pushing down the clutch stops the rattle instantly, as does revving the engine to just above idle when the clutch is up.
The gearbox is absolutely perfect in use. It's smooth, synchros are fine and not the slightest hint of a noise or rattle in any gear when under way...
Similarly, although a tad high as most hydraulic clutches are, the clutch is absolutely perfect in use.
My thoughts are that one or more of the springs might be loose/broken in the clutch driven plate. This is reinforced by the takeup occasionally feeling a little bit on/off in character...
Does this seem a reasonable diagnosis?
It's only really become audible since I swapped the alternator and cured the whining noise that somewhat masked it before
I'm not overly bothered about it as there's no indication it's a showstopper...