I drive my second set of ADIGE discs. As far as I know these are original equipment. SURFLEX should be good, but are more expensive.
I`ve read less good things about Barnett clutches but I have no personal experiences at all.
You don`t need no special tool for the job.
To bleed the clutch remove the clutch cover, "pump" the clutch while you keep your thumb on the slave cylinder. Do this gently and beware that the cylinder does not pop out. Then gently press it in with your thumb again. The cover of the clutch (master) pump should be mounted but not tightened with its screws to allow some air to come out while not squirting brake fluid all over.
Repeat this a couple of times after having bled the clutch the usual way. This will remove the last air bubbles.
For the first bleeding I personally always do the same procedure holding the cover as high as the clutch line allows. Then I keep one thumb on the piston while I pump with the other hand. Keeping the (finger) pressure on the cylinder I then open the bleeding screw while pushing the piston in.
Of course it`s not the easiest way and better to do in 2 but it`s definetely the best and fastest way to get all the air out of the system! If anyone has some doubts - try it
A vented clutch cover makes it better to hold btw
Does your clutch lose any fluid inside the clutch cover ?
The squealing may come from the bearing in the slave piston. If you can`t remove it you probably will have to replace the whole piston. Check the "750 Paso Technical FAQ Digest" topic.
Gerhard