So are your Qs8's mounted to the sides of the listening area (as they should be in 5.1) or when you say "rear" are you referring to the sides and back surrounds in a 7.1 setup? If you have side surrounds, not really sure what "side axis" is as Emo calls it.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85