I HAVE A JENSEN WOOD/COAL FURNACE FROM ABOUT 1982. I DONT HAVE ANY MANUALS ON HOW TO POSITION THE FLEW AND DRAFT STUFF FOR MAXIMUN EFFICENCY. I DONT WANT TO JUST BURN UP MY WOOD. IM TRYING TO MAKE HEAT. IT SEEMS TO SHORT CYCLE A GOOD BIT OF THE TIME WHEN GETTING HEATED UP AND AFTER THE TEMP IN THE HOUSE IS GOOD , IT STILL SEEMS TO RUN REALLY SHORT CYCLES . ANY HELP I WOULD APP. MY LIMIT SWITCH IS AT 100 AND 200 SETTINGS