Combine Dry Rub ingredients. Set aside about one-third of the mixture for sprinkling on the ribs when finished. Add water, vinegar
, and lemon juice to the remaining two-thirds of the rub to make a paste. Rub the paste on both sides of the ribs and set on the grill. Cook for 2 1/2 hours, until ribs are tender. When the ribs are just about done, use a basting brush to give the ribs a final baste with the Dry Rub paste. Cook for 1 to 2 minutes more, turning once. Shower the ribs with the reserved Dry rub, then serve immediately.