Soooo, I bought a pack of BCW current backing boards off of amazon because I had $5 in credit, but upon opening the pack I realized that I had no flamin' idea how to distinguish the protected side from the non-protected side. The only thing I could do was keep the ones I took out facing the same direction they were in the packet. Does anyone have a test/technique they use with these bags that helps them tell the difference? No matter how many times I rub the sides or what kind of lighting I'm in, they look the same to me and I don't wanna waste fifty-some odd boards. Thanks in advance for your help, everyone.