Hi mate i have a hyper single exedy clutch/lightened fly like the ones dw sell for a grand+
The friction plate is dead and you would need a new one. RHD Japan sell them for £130 - £150. Dw sell the entire kits for £955. They may be able to get replacement friction plate for you also. I have a thread that i just put up with pics if you want to take a look at them. It's an awesome clutch ran great on the s15 up until the friction plate ran out of meat.