John - would you mind posting some pics of the mounts you used to get the screen to hang straight down from the sloped wall? A side shot would be great as well if you can. Does the bottom of the screen hang free away from the wall behind it?
I have a sloped wall in my room that drives me nuts and I've been talking about moving my screen up higher on the wall for a long time, but haven't done so because I haven't yet figured out how to mount the screen from the sloped section of the wall.
Any advice on how you did it would be appreciated. (I've been talking about this for a year, so there's no terrible hurry. Whenever you have time would be great)