I just wanted to post this because its so easy, figured someone could benefit from it. 5/21/11 Added a smoke stack extension. I was playing around a bit with regulating the pit temps in an attempt to give me even more control over the temps, so I added an adjustable extension that slides right into the stack snugly, just make sure to remove both ends of the can Extension in down position. Extension raised by slightly twisting. extension lowered by slightly twisting.