Just got a New Install in my RV, HR-34 and two C31's. ( Free with a new RV Account) The SWM-8 was installed in a upper box and mounted to the backside of the cabinet with smoked glass. Then closed the SWM-8 runs HOT! Is this normal and would it help to stand the switch off the back wall about 1". I know I need more air flow but I would like to close the cabinet door without overheating the wooden cabinet.