beautiful looking rib steaks by the way. Be careful about getting the grill too hot, or you will bypass something called the "Maillard Reaction," a chemical reaction that takes place when foods are heated to a certain point. It's what gives that beautiful crusty brown color to certain breads, and that crusty char-broiled flavor to meats. I cook over lump charcoal daily, and for medium rare, using a Big Green Egg, I get my inside temperature to 425, and then for a 1.5 inch steak, do 2 minutes on the first side, rotate the steak 60 degrees and then cook for one minute. then I flip the steaks, and repeat that process. Remove meat from grill, and let sit a few minutes for the juices to settle. Results: perfect medium rare steaks every time, with crusty exteriors.