I want to be able to move one of my wall kitchen cupboards about 10mm (5mm at a minimum) to the left. It has the type of fitting attachment as shown in photo. I'm assuming that screw does not go directly into the wall but attaches to some form of bracket on the wall behind. Is there any possibility with the cupboard empty of loosening that screw (x2) and sliding slightly to the left or does it not work like that?