1 1/3 cups ketchup
3/4 cup chili sauce
2/3 cup packed brown sugar
1/4 cup cider vinegar
3 tablespoons Worcestershire sauce
3 tablespoons Dijon mustard
2 tablespoons lemon juice
1 tablespoon liquid smoke
4 lb pork baby back ribs, cut into 3-rib sections
3/4 teaspoon salt
1/4 teaspoon pepper