Long story short. I ordered a 10lb brisket. Paid by CC over the phone for a friend to pick-up. When I called to pay with CC they were busy and hadn't put my bill together. Fine. I'll give you the number you charge it. Well. My friend shows up with a 17lb brisket. ***. I have to cook this thing for a party tomorrow so there is no other option. How do I fit this on my 18" Weber?