a half rack generally will take at least the same amount of time to cook as a whole rack. Also "they were the thickest" that means it will take even longer to reach temp. MikeThanks for your replies. Pork ribs go that hi? Wow I guess I'm still new. I typically have gone by time, 2-2-1, on my pork ribs and they come out not quite falling off the bone. This was a 1/2 rack so I figured they wouldn't need as long. They were the "thickest" ribs I've done to date. Wow I'm feeling like a dummy.
Lesson learned. Thanks again for schooling me.