On every source page in Mobile Pro G iPad, I have created volume control buttons for four room. These rooms are on a PAMP. For example, on the iPod page, I have four sets of volume control buttons for Great Rm, Kitchen, Bedroom and Sun Room. I programmed the buttons using the room outputs, which I thought were discrete volume commands for each room.

However it looks like when I turn up the volume in a room - other than the room the page is set at - both rooms go up and down together. So if the room is set to Great Room and I turn up the Kitchen volume, both rooms go up in volume at the same time.

I have monitored the activity and confirmed that both rooms are turning up and down.

Can anyone suggest what might be going on? I've wasted quite a bit of time trying to figure this one out. Three tech support guys and still no answer. Thanks!