I have a gas Weber I bought in 95, and It's not the largest, or the smallest, and don't know the model. I use those wire racks that you can hang 10 chicken legs each, and I use 4 racks with a total of 40 legs. I have been cooking with the center burner off, but the racks are not centered as in overlapping on the front and rear burners and are placed perpendicular (front to rear) to the burners. Was wondering if I should just use all 3 burners on low? Thanks, Frank