I'm planning on gluing 2 layers of plywood together to form a transom. I took the trouble of fully-coating both plywood pieces in epoxy on the off chance that there's some water intrusion between the layers. I planned on adding a couple more coats of epoxy once they're joined. However, it occurred to me that the glue (Tite Bond III) might work better when applied to bare wood. Do I need to sand off the epoxy or will Tite Bond work with epoxy-coated wood? I could also stay with epoxy, apply West Systems Six10 thickened epoxy as an adhesive. Any suggestions? Thanks!