46 minutes ago, chileheadmike said:I have some lamb shanks that I plan on doing in the IP.
I think that I would start them out at 30 minutes. You can always cook them more if they need it but you can't cook them less once it's done. I found that out to my detriment a while back when I cooked some little pork ribs. I wound up with delicious flavored sticks of wood.
Even lamb shanks can be quite delicate.