It sounds like the nut inside the roof needs to be tightened. You will need to take the handle off,inside the MH, and it takes a special tool that slides up over the shaft and tightens the nut that holds the shaft tight to the inside of the roof. I just had mine done when I had the TV antenna break outside where it feeds into the aluminum arm. Tool is like a 6-8" hollow pipe with 6pt.hex that fits over the nut.