Hi All. New to the forum. New to Smoking. I've had my smoker for a couple of weeks now. Unit is the same unit that is pictued here (Stainless, seperate drawer for water/chips): Overall, I've been very pleased with it. I do have a question though for the experts on here. The chip box (appears to be porcelean, rectangular, no top) sits between the burner and water tray. It can be positioned anywhere from side to side. I started out with it all the way to the right and furtherst away from the burner/flame. It took quite a bit of time to finally get warmed up enough to smoke. The next time, I put it right over top of the burner, and it seemed to catch fire and smoke too much...more burn than smoke. My question is that is it typical for the chip box to be over the flame or to the side? I'm using chunks of hickory w/ bark (from Home Depot). Also, when should the chunks be replaced? If they catch fire, should I take them out, or stop the fire with water and continue to use?