I have been losing water when pump is on-overnight on filter, lost about 3 inches. I don't see any leaks around the pool, but there is water coming from the waste pipe when on filter. After reading some other posts, I checked the spider gasket in the valve, looks good-no cracks, not coming loose or anything. I did notice that the handle has been hard to turn and when I took the cover off the valve I notice that the slots on the underside of the cover and the diverter don't line up (when the handle is in the filter position, the opening in the diverter is askew to the slots on the cover-should they line up? What else could be causing me to lose water through waste pipe when filtering?
Thanks for your help.