[Richard]

Hmmmmm the hcvs are separated from the leveling functions by the six pack. So the hcv changeout should not have effected the raising and lowering.

What is your supply pressure?

Let me ask the question again. What happens when you raise the coach above normal height and then put it in travel.

Trying to eliminate simple things first like valve in upside down.
Really easy to do on the front.

What brand and model hcv did you use?