I just got my 6th speaker, now making a 6.1 system. The right surround is placed on a stand approx. 1.5 ft away from the edge of the couch. I can't move it anywhere really because the speaker is only like 3/4 ft away from the wall. So the question is, as for my left surround speaker should I place it against the adjacent wall, making it about 4 or 5 ft from my couch, or move it 1.5ft like the other speaker? I know the automatic optimizer on my reciever will figure out the speaker volume levels etc. but any advice?