The pad material consititutes a hazardous material situation because they are a composite of cloth,steel, and asbestos. I highly recommend wearing a mask when initially taking apart unknown clutches and brakes because of the deadly health risk. I love dismantling the bike because it's often like an archaeological expedition. You get to see the handiwork of previous owners- the good, the bad, and the ugly. In this case, I noticed the clutch mushroom which is a difficult and expensive part to find was replaced at some point by a valve that fits and works perfectly. Genius!
I plan to beburr the plates and replace the asbestos pads with cork. I run a dry primary case with an IWIS self-lubricating primary chain so I have a some doubts about the durability of the cork. The experiment will be an interesting one. More to follow.