My brother just got a Brinkman Vertical Charcoal smoker. He claims he can't get much more then 160 degrees of heat out of it with the vents wide open. He claims with the vents wide open he just goes through charcoal? I've never used anything like this one. I have a Brinkman gasser and an offset. Seems to me with a vertical charcoal model keeping the tempeture down would be more of the problem? We live a ways apart so I haven't been able to see exactly what he's doing or not doing I thought maybe someone out there might have some tips for him.