I did 3 slabs of baby backs for super bowl Sunday.
I did them at 225-240 for 3 hours. I sprayed them with half apple cider vinegar/AJ and applied parkay spread butter after hours 1 and 2.
After the 3rd hour I put honey, Brown sugar, butter, and chili sauce on the aluminum foil and put the ribs on them meat side down and slightly wrapped them. I did them for one hour like that.
I then unfoiled them, basted with some bbq sauce, and put them back on for 15-20 min.
They were tender, pull off the bone and delicious.