Worked fine with a bit of copper grease on the face to help with 'off centred ness'
and a 1/4 drive socket up the slave cyl (behind the piston) to pre load the position of the clutch arm
Does the 1/4 socket stop the roller bearing from rattling against the thrust pad and shaft?
If so, I 'll try it 'cos mine rattles very loudly on tickover with the clutch disengaged.
I was going to fit a spring between the arm and roller bearing as others have done but I didn't take the time to lash one up and now i regret it.
It was a good while ago I cant remember if it rattled,
the main problem was the relaese fork was moving away from the clutch
meaning the pedal had a bit of slack to take up,
An adjustable push rod could have taken it up but that maybe would have allowed too much travel and risk pushing the release bearing too far into the clutch.
I think the imp slave cyl had a circip to stop the piston poping out, and the 1/4 drive socket was small enough to drop
down the bore and limit the travel in the other direction.
Most roller release bearings are designed to run in (almost) constant contact and carbon ones need to have clearance.
normally only relevant to adjusting cable clutches.
I think most hydraulic roller systems have a pre-load spring.
There was something else about measuring the disengagement distance required for the unworn clutch,
then setting that as a maximum travel.
It took more than one master cyl of fluid to disengage the clutch.
So I had an assistant slowly depress the clutch as i checked for disengagement ,
clamping the hose to allow a second pedal application.
and packing washers on the slave cyl mounts.
you could probably lash up an external spring to hold your clutch arm,
just looked again at your post,
your rattles with the clutch DISENGAGED ? as in your foot fully down on the pedal ?
if so you need a bit of copper grease (or another grease which wont fling onto the lining )
as this rattle is probably due to the arc of the clutch arm movement meaning the release bearing and clutch are not
concentric with each other.
the releae bearing I used was thicker round the outer housing with a groove round the outside, like two radial flanges.
part of one of these had to be ground away to let it fit the fork,
so there amount of movement was limited and the release bearing could not come into contact with the shaft.
OR if you have too mutch travel you may be pushing the centre of the cover into the centre plate,
how far 'past' disengagement does you clutch pedal move ?