Personally, I like them to fall off the bone, but not so much that they fall apart when picked up. It all depends on the size an weight of the ribs, and certainly type. St. Louis cut I will go for the full 3-2-1. Babies, which I dont do often, at least an hour or more less, less time in the foil as one can always leave them on longer at the end. I did a rack a few weeks ago that literally fell apart on me too where I put in too much juice an think I set my maverick wrong, which had me overcooking.................they were still "good eats"...........................d