I have begun to install shelving in the closet of a bedroom that is being used as my computer, office, personal and what ever room. I'm installing battens on the back and end walls to support the shelving. The closet is 8' wide and will, in effect, be a walk-in cupboard. Once you get above the outlets in the back wall of the closet, there is only 1 stud at the center of that back wall other than those at the corners. Yeah, about 4' of unsupported sheet-rock on each side. Between the corner on one side and the stud at the center of the wall, the sheet-rock bows out[in?], leaving a gap of about 3/8" between the shelving and the wall. The other side is reasonably flat. Is there a quick-and-dirty way to draw the wall out so that it will be flush with the back edge of the shelving?