I bought a couple of racks of spares and decided to try the 3-2-1 method today. I am very dissapointed. I cut the racks in half. I had the thinner halves on the bottom and the thicker ends on top after 3 hours I foiled and cooked for 2 more. When I took them out of the foil the bones on the ends were falling off and the ribs were over tender. I decided to put them back on the smoker to dry them out a little and hopefully firm up. I left them on for 20 minutes. They just got more tender and falling apart almost like crock pot ribs. I don't think I will foil again if I do only for an hour at most. I have cooked many ribs and this is the first time I have done it like this and these are definately not what I am looking for. The only time I ever had ribs like this was a uno's years ago and I will never order ribs there again.