Have any of you that have built your own electrics installed a circulation fan? I would like to install one on my freezer conversion to circulate both air and smoke to help eliminate temp zone differences and dead spots. I have a 4 in. computer fan, its a little fast, but it will tolerate a rheostat, to slow it down. My question is where to install it. I was thinking of trying it at the bottom of the smoker, held away from the back wall about an inch or so. I'm worried it may blow smoke back into the generation box. I am also considering placing it in the smoke generator somewhere too. I know pics of my smoker would help and I'll try to get some. Any thoughts are appreciated.