Update:
I got the 2nd NAD C272 yesterday and installed it last night.

I am not sure if I did this right. First I hooked it up to the "left and right surround back" but got nothing. Could not get the speaker size to change from NONE. So I hooked it up the the "Surround Left and Right" and was able to change the speaker size to "Large". I could get music out of the back speakers but only in the surround modes. I wanted 5 speaker surround but only regular stereo was available. So as an experiment I set the "left and right surround back" to "small" even though there are no speakers there at all. Now the 5 and 6 speaker stere is available and sounds awesome. Please inform me if there is a better way. But I am not sure it could sound any better. I am loving this sound system. While playing Sinatra's fly me to the moon, I could of swore he was in my shop. Thanks a bunch Outlaw.

Ritchie