Thanks guys. And yes, gmay3, it's in the build guide (guess I should have looked there first). Just says get a 10"x10" piece, and break the corners off, like dacb said. Not having really ever worked with glass, I'm not sure how breaking the corners off will go. Haha. We'll find out. Plexiglass is cheap, and I can cut it with a dremel. So that's my usual solution. Unfortunately, I don't think that would go over so well in this case.