I am thinking of building a fixed frame screen but ceiling mounting it as I have a large window in the area I need to put the screen . The reason being I have read on this and the AVS forum that ceiling mounted pull down or electric screen can suffer from sagging and wrinkles, which a more expensive tensioned screen would help but budjet wont allow this. I've recently bought a BD808s and was thinking of an 8' wide screen. Can anyone see any problems with this? Is it usually the case for the pull down/electric screens to exhibit this flaw? Any help appreciated before I spend any cash? Thanks Dean.