We have a Flagstaff HW27KS 2015. Upon closing top and latching, a beeping sound started and can be heard coming from somewhere inside the rear of the camper. We raised it up again, to make sure everything inside was off. When completely lowered and we go to latch the top, it beeps. We have to raise it about 1 inch before it stops but can't close the roof! PLEASE HELP....