[Richard]

Plumbers silicone at HD or Lowes.

If I understood correctly, you said you had already rebuilt one of the solenoids? How recent was that?

Could you answer the questions. What is the supply pressure? Do you have a green travel light on the HWH panel? Are the travel solenoids energized?

You can go inside the front bay, and take the two bolts loose that hold the six pack. It will allow you to pull it out from under the coach to work on it.