Thanks guys.
Did a dry run (no meat) today with it and temps bounced between 230-260 for 10 hours and there was still about 1" of water in the resivoir. The ash seemed to hang up a bit in the screen but I knocked them down around the 6 hour mark with some tongs and solved that problem. I also had to sweep the one touch a few times to clean the ash out of the bottom of the bowl so the air flow wasn't restricted. With the mesh size in the screen I used and the charcoal grate beneath, the holes were quite small so I can see why the ash was hanging up. Maybe some careful placement to make the screen holes and charcoal grate match up might fix this problem. Other than that I'm real happy with it.