I have an AGP and have learned lots in the last 3 years! That is not to say that I know anything at this point. Right now my situation is baffling. The pool water is leaking out through the discharge port as if the valve was still open for backwashing. I have taken the top of the Multi-Port system and do not see anything that would cause the water to leak out... HELP! PLEASE! What do I look for? Thanks for your help! jlovell