Hi Paul, I'm finally getting caught up, I think.
take a look at this
You could also go more advanced http://www.michaelgreenaudio.net/pressure-zone-controller but I think you'll be pretty surprised with this RT setup.
Once you get them in, there are a few other system placement issues we could look at. Nothing too dramatic just a few inches here and there.
also, take a look at a few other tweaks
http://www.michaelgreenaudio.net/platforms
http://www.michaelgreenaudio.net/mga-audio-cable (scroll down to the cable grounds)