OK, I'm glad you brought this up. I'm listening to the Atmos downmixed to 5.1 and it seems only tracks 1 and 2 have anything in the centre channel. For the rest of the album, the centre is non-existent and I was beginning to wonder if my system was going mad! Anyone else finding the same? Strange mixing decision to make if my system is playing correctly.The 360RA version has no center channel which isn't usually the case, unlike the subwoofer channel.