Several mentions in different threads about the primary air lever not moving all the way left (closed) on this insert. The distance typically mentioned is around 1/8 inch from going completely left. I understand why they don't want someone to shut off the air totally but when I measured my lever its a little over 1/2 inch from closing. After a couple of weeks burning I'm beginning to believe I'm getting too much air and am wondering if there is a way to adjust the air control so it might close a little more. My adjustment also will not move completely to the right which doesn't seem to be a problem for others with this model. Just another indication to me something might be wrong with the adjustment on my insert. Thanks, awesome forum.