I have some crawl space under a staircase, so it's "ceiling" is 45 degree-sloped. The depth of the space at the bottom is about 50". Width is about 32" with the 2X4 splitting it in half. Height is 30". I want to install some type of heavy-duty slide-out shelving, but I have the supporting 2X4 that splits the space in half. I prefer to have one shelf, not two, so can I remove the 2X4" and replace it with some type of additional support e.g. along the sides of the crawlspace? Thanks!