I've noticed that my WO-65 seems to over fill quite a bit, how high should it fill exactly? At this point it fills up a bit past the tub ring and starts to overflow a bit, is there a way to limit the flow? I would do it right at the water pipes, but if I lower both the cold and hot to a suitable warm fill level, won't the hot fill be too low then? Should I look for some kind of flow restrictor at the hardware store to place on the end of the gooseneck flume inside the control panel?