I dont ever fill the water pan. it eats up the fuel, if you insist on using it try filling it up 1/4 the way and let it evap 1/2 way through the cook so you get a good bark on it,
Thanks. With temps in 30s I'm going to try w/o a water pan next butt cook. Do you notice big temp swings w/o using water? Do you know if the old water pan is available for purchase?