I have a tub in master suite, 2nd floor, new home. Filled tub, turned on jets, enjoyed relaxing bath, turned off, drained out. Went downstairs, water leaking from ceiling onto hardward floor. Called builder, he and plumber came, thought overflow drain leaked, as I told him when jets turned on, water level went over overflow drain, but that was not leaking after they check. They found that the water leaked out at the Air Intake Plate. Called tub Co. and they told him that I caused the leak by letting water go over the intake. My belief is that no fixture in a tub should leak! Who is right!