[Richard]

Thank you, SUPER!

You don’t appear to have a side to side imbalance. That is controlled by the rear HCV’s

What your trial told us is:
Your are reasonably balanced side to side with the rear HCVs.
At least the lower and travel solenoids are functioning properly.
You don’t have a major leak at the airbags.

What we don’t know:
Was there enough air pressure and time to raise the coach completely. It takes 120 psi on the supply side to raise the rear. I said wait five minutes, but I don’t know how fast your engine air compressor builds air or how empty the air bags were when the coach was lowered.

Have the HCV’s been adjusted recently. The front one was touched. We don’t know about the rear ones.

The front and rear appear low. The first question this begs is there enough air pressure to raise the coach. The second question is are the HCVs adjusted correctly.

BEFORE even thinking about HCVs, we must ensure the coach has proper air pressure and time to raise the coach fully.

Crank coach, allow air pressure to build to 120 on the supply gauge, and wait another five minutes before measuring. If it doesn’t raise, go to the next step.

Just for a sanity check, with the key on, HWH in travel mode, take a steel washer and confirm the four travel solenoids are energized.

You can do the same with the raise and dump at your convenience. A wiring diagram will not help you since the wires are not marked.

ONLY after confirming sufficient air pressure and time and travel solenoids open, should you conclude the HCVs are out of adjustment.

Not that you don’t have enough to think about right now, but keep something in mind. The toe in changes dramatically as the ride height changes. The point being that as you fiddle with the front ride height, any front end alignment you had done goes out the window. . If the coach is above the ride height the alignment was setup, it will be toed out, and drive awful. It will dart from side to side. If it is lower than ride height at which the alignment was done, it will be toed in more. It may wear the tires a bit, but it will drive OK. MY POINT. If you adjust the front ride height, it is better to err on the low side.