Doing a David Regal effect (Face It You've Changed) where just the faces need to be roughed. I did up a deck using the Robson Roughing Stick. This has worked very well for Inv. Deck, BW etc where there are rough to rough. But when I made up this deck, the roughed faces stuck to the un-treated backs of cards, making the effect impossible to do.

So I'm thinking of trying Testor's Dullcote on my next attempt.

Any tips / advice ?