I've got 12lbs of boneless chix thighs brined and ready to go this afternoon for tomorrow's party. Doing pulled chix sandwiches. By the looks of it, my Chargriller clearly won't handle that much chix on the existing grates so was thinking of adding a second level above the grate using a make-shift rack. I know the temp is higher up there but wondering about the affects on the birds below. Has anyone done this?