Starting to implement the suggestions.
I'll need to reattach the ash dump to the longer section of pipe. I'm debating the merits of a hinged ash dump verses the original design.
I have a little bit of flat scrap to attach to the sides to increase the height but I'm not sure of the best way to attach it and still allow access for the material being heated (possibly cut it in half for a pass through). I would need to scrounge some additional scrap to increase the height for the back.
Not sure how it performed before. I haven't lit it yet. I've been having too much fun just building it