So when I took possession of my pool I originally had a check valve that was leaking causing the spa to drain down when the pump was off. Last weekend I has a suction side leak at my main Jandy neverlube valve that is right before the pump. This is the valve that switches the suction side from pool to spa. So I got some new gaskets and I have no air in the system now. However, now the spa drains about 3-4 inches over night again. My only thoughts are that its the diverter in the neverlube valve. not making a perfect seal. The check valve is new, so I don't know what else could be causing it. Am I on the right track? Thanks.