I could not view your pictures. But I did see your video. Tomorrow ill have the bottom welded on and the wheels as well. Then ill fire it up and snap some pics. I wrapped the 90 with high heat fiber insulation. And around it poured 1 cubic foot of red lava rock around the insulated 90. For the cover lid im going the cut two 3 inch holes as a exhaust. The two 3 should slow the flow but yet still allow the same amount of air to escape.