There was a guy on here that added a ''wing'' just above the BP gap that deflected the heat across the lower rack instead of going straight up. He said it really helped with the temperature difference but I don't have any personal experience with his design.
If this worked it will show my entire built to date. The trailer is a multi purpose it will hold a propane grill/breakfast grittle, charcoal weber my opinion best for grilling corn, most important! My stick burner I live on 400 acre orchard so it make sense to use wood then I don't have to buy charcoal, I will be able to hold wood, and table perpetration space. Excited to finish. I'll post more later if people care. First cook will be Saturday.
My top rack is hotter than the bottom (heat rises, go figure) but side to side is pretty even. I have thought about adding a ''wing'' over my BP gap but I've never got around to it.