Looks like you started with 12.36 pounds. I'm guessing you wound up with 40% or about 5 pounds before you sliced into steaks. Am I close? Since tri tip is so hard to get here I'm thinking this would be a good alternative?
Weber 26.75 OTG w/CI grates & SJ/WSM Mini
Home built 24"x72" reverse flow stick burner trailer with 18"x44" grill w/CI grates and upright SS gas oven/smoker.
Home built 48" fire pit with a 30"x30" Santa Maria style ranch grill.
Home built lump charcoal retort, iGrill & a bunch of other cooking toys.