i built what is basically an upright smoker (firebox on bottom, compressor tank welded Verticle). I'll start a thread on it this week. The basic design is below. Anyway, fired it up for the first time this weekend and it worked great except for one issue. It condensed so much moisture on the top that it kind of rained down on the food creating small black pools (gross...I cut off those pieces of meat). Anone know what could cause this? It ran great except for this problem. I did not use a water pan. Any thoughts?