I just fired up my PS50 followed the directions and it seems to be letting our smoke from the top of the stove just above the door where it blows the heat out. Not sure if I did not run it on high for long enough or if it is the draft. I ran straight out a block wall the elbowed up following the directions and using the parts in the DuraVent Pellet kit. Any thoughts? Is this normal? Will it go away once the stove is cured?