I think I got it solved. I am using BOTH O-rings. That seals it up good!One more: forgot about this one.
On the top cap where it connects to the chimney stem should be an o-ring holding the chimney stem to the top cap. This could be where your air leak is - sometimes when they ship these things, they roll the o-ring down the stem instead of putting it on the top cap. There's no vacuum in the tank if there's an air leak, so yeah it would go gushing down the air holes.


