I've got the nc13 installed in a corner. I previously had a 17vl there and had plenty of room. My only clearance issue is the corners. After setting the 13, I've got 7" clearance to the corners. I believe the book calls for 8 or 8 1/2. I've got the side heat shields, which seems to take a lot of the heat away from the wall. I had her up to 650 or so for a few hours at years end and the wall was hardly even warm. What would you guys do?