I bought a pair of SVS Ultra Bookshelves for 300 bucks a few months ago. One of the speakers was damaged. The guy had sliced one of the speaker while taking off some waveguide he had attached. There's some other scratches and dents, but it sounds fine. I ran it, because I wanted to see if the tear would get bigger. It got bigger, so I need to fix it. What should I use to fix it? Paper and rubber cement? Or will that eat the rubbery whatever it's made out of material?