I started a small turkey an hour ago and cannot control the temp in the Egg. At 1st it looked steady at 300 but soon took off and is now steady at 440! . I have of course shut all air vents top and bottom. This has zero effect. In an attempt to not ruin the turkey, I have opened the grill up to try to let cold air in and retard the cooking. Would it be wise to spray down the red hot coals with water?? I need help!!!