MrFixit,
You're the best. I did what you said, and I now see how the solenoids come off. I did check that white thing inside, and it seemed tight. I see how you use the other part of the solenoid to tighten it, etc. It seemed tight, and I felt like I really did not do anything, but low and behold, the zone no longer leaks.
As of now, the whole system is perfect. Since I'm only down here twice a year and since water is so expensive down here, checking the system is one of the first things I do when we get here. It seems each time I'm fixing a pipe or replacing a rotor, etc.
This time I was stumped because I did not expect to have to work on the "new" valves. I really appreciate your help. SprinklerWarehouse does not stock any valve parts for Irritrol valves, so I'm glad you helped me fix things without needing parts. I'm kind of surprised they do not stock the parts, since these valves were well recommended and I bought the valves from them.
Thanks to you I learned a lot this trip. We'll see what I find next April......
Thank you again!!! Frank.
"He is no fool who gives up what he cannot keep to gain what he cannot lose"