Good luck Marvin. I have a UDS and a Mini-UDS, when I cold smoke, I use an electric hot plate, a small cast iron pot full of wood chips, covered with foil, poke holes in the foil, and place it on the hot plate. Presto! The hot plate being adjustable, you can dial it in according to the outside temp, especially when it's 90 outside and your are trying to smoke at 110 or lower. Works for me.