Customer called for system check. He mentioned he had a zone stuck on when they turned the system off. We turned on power to pump and found zone 7 was stuck on. We replaced valve then checked system. We found multiple rotors on every zone either leaking or sticking. We also found all 12” heads on zone 10 sticking and leaking. We replaced all leaking heads and checked system a few times over to make sure nothing else was leaking.