Grilled Chicken with Tangy Barbecue Sauce

This is quite a treat!  It's super easy and absolutely delicious!  The sauce is amazing and goes perfect on the chicken.  It also keeps in the fridge for a while, so whenever you want a quick barbecue, just hit up the grill, cook the meat and baste it with this amazing sauce.  Super easy!  Enjoy!
-chicken pieces for grilling (thighs, wings, drums, etc)
-salt and pepper
-1 cup ketchup
-1/2 cup apple cider vinegar
-3 Tbs molasses
-3 Tbs brown sugar
-1 Tbs ground mustard
-1 Tbs soy sauce
-2 tsp Worcestershire sauce
-1 cup water
-salt and pepper, to taste
Let the meat sit at room temperature for about 20 minutes before cooking.  Season with salt and pepper on both sides.
Meanwhile, combine all the remaining ingredients in medium sauce pan.  Bring to a boil and let it simmer for about 30 minutes, stirring occasionally.
Coat the grill with cooking spray.  Turn on the heat. Place the meat on the grill, skin side down, and cook for about 7 minutes on each side.  Baste with the barbecue on one side and leave it alone for about 1 minute.  Flip on the other side and baste with the sauce.  Repeat the process 2 more times.  Transfer meat onto plate and serve.  Enjoy!