Soak wood chips for about an hour. Mix all seasonings for dry rub. My all ingredients for the BBQ sauce, set both aside.
Coat ribs front and back with yellow mustard. Apply generous amounts of the rub we made. Sprinkle on a liberal amount of brown sugar. Don't be shy with the brown sugar. Rub it in real good. Place in the refrigerator for 30-45 minutes to allow flavors to absorb into meat.
Smoke ribs over wood chips at 225 for 3 hours. Mist the ribs with apple juice every 30 minutes.
After 3 hours, remove ribs and place on foil. Splash on apple juice. Again don't be afraid to put some on there. Wrap foil around ribs and place back into smoker.
Cook another 1.5 hours then remove the ribs from the tin foil and place them back in the smoker.
Sauce up the ribs and smoke for another 45 minutes.