My attached spa is once again leaking down to pool level. This happened last summer and after replacing the check valve for the second time in ten years, it stayed at the right level with the pump off. I've noticed one of the 3 way valves is not making it's complete 180. The other 3 way was replaced last summer when it stopped functioning at all. Is the position of the valve on the right enough to make it leak down after the pump cuts off? Is it time to replace this 3 way also?