I had to adjust mine up. Remove the cover. Loosen the bolts on the side of the bracket with an Allen wrench. Adjust as required. You may need to slide the whole camera down a bit to clear the opening in the cover. Tighten up the bolts and put the cover back on. Put some caulk in the cover screw holes before you put the screws back in.
2021 Newmar Bay Star 3626