I just had a 722 installed and my only concern is overheating . I have the 722 on a shelf a couple of inches above the DVD player and a couple of inches below the TV. It has a few inches of space all around. The front of the cabinet has a glass door and the back had cardboard that has been cut out. I guess I want to know what a good average temp for the unit is. I've heard a few people mention raisingg the unit a little for air flow, whats the best way to do that. I really like the 722 and dont want anything to happen to it. I guess at worst if it overheats to the point of not working they would send a new unit, but Id rather not get to that. Please help. Thanks.