Hi First time for me on this forum. I have an issue with a zone - and after all troubleshooting i'm still not quite sure what is wrong. I have a triple zone valve. Zone one - doesn't come on anymore. I thought at first it was a bad selenoid - so i switched zone one and two selenoids - I turned on zone two (which now had the potentially bad solenoid) - and the sprinklers came one. I turned on zone one (which now had the good solenoid) - and it failed to come one. I checked the connection at the b...