Closing the loop, the roast ended up being almost 13 lbs. Took about 5 1/2 hours, 4+ at 225F and an hour or so at 450F. I used a rub provided by the butcher, and it came out GREAT!
Key point - the Traeger probe did not extend fully in to the middle of the roast. When the probe was at 130F, I checked with a handheld and at Rib 3 in the middle it was only 120F. I upped to 450F to reverse sear, but used the handheld to make sure the middle was 130F before I removed the roast.
Probably could have used a 4 rib roast even for 9. Oh well. Great leftovers.
30 minute sit-time per the "Bearded Butcher" was right on.
Happy New Year everyone!
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