Anyone have a good way to hang/mount treatment panels on the ceiling? Hopefully so there is little to no gap between the ceiling and the panel, and there's no mounting hardware visible? I mounted one with springs and drywall anchors and it looks good but it was a minor nightmare to get up there. I'd like to put some more up but don't want to go through that again. Panel details - 2'x4', 3" Safe n Sound in a 1x4 frame, wrapped with fabric. I'd like to use the Owens Corning stuff since it doesn't need a frame but I don't know where to get it around here.