Bob, my wife and I also picked up some of the boneless beef ribs @Costco Woodinville, they are super with great beef flavor and very nicely marbled like yours. Cooked on the Q300 with GrillGrates to 130* just used kosher salt, ground black pepper and garlic powder for seasoning. Out of this world beef flavor. We are going to get more of these, perfect size for a great meal with a green salad, avocado, and for me, a cold beer.