Going to smoke my first butt Sunday in my GOSM big block. You guys have been great answering many of my questions as I have spent a good deal of time reading a ton of posts. I can't seem to find info on 2 probably very basic questions. Does the water pan need to be refilled or does it usually have enough liquid through the whole process? And..... Do I keep the woodpan filled or is there a point in the cooking time that the smoke has little effect on the meat? I'll be using peach or cherry chunks and some hickory chips. Your help is always appreciated.