I don't doubt the reps said that. The white paper, however, only recommends it for narrow dispersion speakers. Maybe angled would be better. How much better for how much effort. I'm in the 'leave well enough alone' camp.

I have some sketchup models of the room. I'll look for them tomorrow. Just under 9' ceilings. Two speakers 30 degrees in front of MLP and two more 30 degrees behind. I tried to stick within the Dolby recommended angles in the Atmos white paper.