Just being picky, but there's convection heat and radiant heat (amongst others) and they are different. Short version, use bricks on your charcoal grate to block any direct radiant heat. To illustrate, set your same up on the left side of bowl running from 7 to 11 o'clock. To the right of that, line a couple of bricks up running right down center from 12 to 6. When ready, put rib rack on the right side of the gate so that the ribs are on one side of the wall and the charcoal is on the other. BTW, if you need more space, move the line of bricks to the left, closer to the coals.
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