I've cooked a few racks already, for 8hrs, the meat fell off of the bone! But I just seasoned the ribs, then stuck em in for 8hrs, and feed wood chips every hr. Then ends came out a bit dry, but the middle was SOO good. But I read the 3-2-1 steps for spare ribs, then the 2-2-1 for baby back. Should I be wrapping the beef ribs with foil after the 3rd hr? Thanks.