I'm starting to get a headache
I retained factory system when driving - then individual 'push-pull' valves when parked 'like camping' on unlevel ground.
rears are normally tied together, but separated when parked.
fronts are normally separate when driving or camped.
bottom line: Level it with manual valves when parked. When ready to drive away - just flip a switch and it levels using factory leveling valves. Wa La
5) 'bubble-free' solenoids used.
Stays level about a week when parked - then we need to air it up again.
We could block it - that might be better for longer stays.