Yes Bruce, because of the way the rafters were positioned, I could not get it perfectly centered. It is not an issue though since the Sanyo's and a few other projectors have "Lens Shift" where you can adjust up/down or left/right to line up the image. This makes things so much easier. I'm still pretty close to the center of the optics so it works great. The only problem would be if the projector was clear to the side of the room and I had to really adjust the Lens Shift.
Since my back wall was painted Flat Black, I don't use a border. If there is any light spilling off the sides it gets soaked up by the black paint.
I did place insulation in the ceiling above the HT area, but not the entire basement. Not sure anything can stop the EP500 thumping.
