The back of the seat cards (not sure that is what we call them), are coming off!

I tried 2-part epoxy (gorilla) and that failed in 2 days. I then tried again but this time, after first scratching the surface of the black pads that are no longer glued to the orange fibrous material. That failed in 2 days.

Any ideas from the members that have lost the back of their front seats?

Thanks