Jeff,
For a different approach with beef ribs, you might like to try a grape juice marinade I picked up from another forum. I've tried it and enjoyed its flavor and effect.
Ingredients
4 cups grape juice
2 cups water
8 cloves minced fresh garlic
2 Tbs Rosemary, chopped
? cup Kosher salt
1 cup sugar
2 tsp Cayenne pepper
Procedure
Mix all ingredients in blender for about 2 minutes. Cover ribs with marinade and place in refrigerator, covered, overnight. We put them into a long FoodSaver bag, vacuumed and sealed. Doing it this way will require 1/2 the above recipe for one slab of ribs.
When you are ready to cook, place the ribs, bone-side down, in your smoker. Maintain a cooking temperature of 220?, at the cooking surface, for 4 hours before opening the smoker. At the end of 4 hours, open the smoker and check for doneness, 180? between the bones. If they are done, spritz them down with grape juice and close the air vents on your smoker. Allow them to rest, as the temperature drops, for two more hours. Remove and enjoy!
See pictures here. (Use Prev and Next links, above the pictures, to scroll through them all.) Enjoy!