Hello all. Just received my first unit as a 50th b-day present. It's a charbroil CB600x Vertical Box Smoker. It was purchased as a propane unit, but had a plumber convert it to natural gas and have it hooked up to the house line. First ride was yesterday, 2 chickens, which came out pretty darned amazing for my first use. Few questions: Drip pan? Did use one instead of having grease drip on water/wood box. Pamphlet stated water should last approx 3 hours. Gone in less than 1. How important is the water. Used all wood chips, mesquite, they burned up fairly quickly, had to reload a few times. Might try mixing chips with small blocks next time (small wood box). Any thoughts? Thats it for now, thanks for any input.