[quote=jdub;749924]If you can't find it here, it can't be found! I've built two, here is what I have learned:
The first got a Weber kettle lid. When I cut the top of the drum to accept the lid, I was never able to get a cut plum enough to make a good seal ( I am not sure if it is the drum that is not cut perfectly or the lid itself is out of plum). This drum has 4 1 inch tubes welded in as vents. 1 has a ball valve, and 1 has a mount for a guru.
This drum is fairly jumpy in the temp department, and I am sure it is the seal of the lid-I can put the lid on one way, and the temp drops. Another way and temp goes up. Add the variability of the ball valve and I have a unit that requires a decent bit of babysitting. It is a bit more stable at higher temps, so chicken and the like do better on this one than say pork butt.
I am using a webber top and a guru (10 cfm) no other vents, built up side down with good results after I sealed the air leaks on the bottom.
I wonder if you where leaking air on the bottom?