I'm new to this as well. Have done babybacks twice now and turned out great. Were devoured! Will likely never try another method. Try this next time and let me know how it turns out.
Have been doing a 2-2-1 and 225. 2 hrs unwrapped, 2 wrapped, and 1 unwrapped. When wrapping I totally cover the top in brown sugar(guessing close to 1/2 cup) and put pats of butter, almost touching, the entire length of the rack. Have also been putting a pan with water on the grates and spritzing with apple juice about every 30 minutes. If want to sauce brush on at 30 minutes left and at 15 minutes left.
Edit: This is not my recipe. Was suggested to me from someone on here. I just can't remember who to give credit to.