if it's not at grate level I'd drop the exhaust....and if the air intake on the firebox isnt large enuff you won't get good airflow. you could use a pit calculator and take measurements to make sure it's all sized right.
"Everything is ok in the end...
so if everything isn't ok...
then things are lookin up...
cuz it's not the end..."
Modified Char-Griller / Whalen 37.5" King Kettle http://www.bbq-brethren.com/forum/sh...d.php?t=108709
/ Very near future UDS & 6' x 37" 325 gallon offset projects.