Note: Price is for 8 Rubber pieces.
Most late models have M6 hex bolts installed to fix the cush drive cover plate to the clutch drum. Earlier models used 5mm diameter rivets
Remove these rivets to replace the cush drive rubbers. Grind off the tops of the rivets, use a 3mm or 4mm drill to drill out the full length of the rivet, then using a 5mm punch gently tap them out. Take great care not to use excessive force that damages the alloy casting. Use an M6x1 Thread Tap to cut a thread in the alloy to accept M6x20 Hex Bolts and Spring Washers that replace the rivets