Hello, finally got my Hurricane stove installed and we're very happy with it! Holds a fire well and is easy to control the temps/fire. We're still learning, but by next winter we'll have all of the nuances figured out... Anyway, the stove is rear exhaust. It has about a 12" opening (a flange welded to stove which is round) - there is an adapter that goes from 12" to 8" stovepipe, which I assume came with the stove. Anyway, that means a 90* elbow is required, from that adapter, in order to go vertical. My problem is the adapter (12" to 8") that came with the stove has crimped (male) 8". I installed my stovepipe "male down" (crimp down) from the triple to single adapter below the ceiling box, which allows the creosote to run down inside the pipe. However, due to the orientation of the adapter on the back of the stove, I had to install the 90* elbow the opposite direction, and use a female-female cut section of stovepipe to couple the elbow to the vertical stovepipe. This is allowing the creosote to run out of the "coupler" piece of stovepipe, and down the outside of the elbow. I need a 90* single wall elbow that is female on both ends. I've looked around some but cannot find one. Can anyone point me to a link, store, chain, etc, where you know they carry them. Thanks in advance, and thanks for the great research resource - it helped much with installing my hearth and stove!