I got volunteered to bring the pulled pork to the party again this year, not that its a bad thing, but this year they want double. I have only done one 8lb pork butt in my MES. I know that it has three racks for a reason but I only used all of them when I smoke ribs. Anyways my question is would I use the top two racks and stagger them or the top rack and bottom rack. Thanks for your help!!