I play with Acoustic Carbon and use Dornenglanz red OX with dampening sponge exactly the red model (max. dampening) by D.M.S. with max. thickness, the other side black Fastarc G-1 max. and very happy. Cured my EJ for a long time.
As tittle said I offer for sale the Old model BTY Primorac off-, not made anymore, weight aprox. 80-83gr, price 100€ + paypal fees if not send as family or friends + shipping, attached pics, blade is in Spain (Europe).
Thanks for looking.