[pestes]

Ok, so had a bit of time to experiment.

First thing's first. After full timing in the coach for almost five years, we've been in a house and out of it for a few months, and it's shocking how fast you can forget some things.

While the coach was dropping down on the front left, it did not drop all the way down. I forgot how far all the way down really is. In any event, the front left is still down enough that tire will meet fiberglass on a turn.

I'm convinced there is not an air leak. I am also convinced that the air escape that I hear in the front is from the HCV exhaust port.

Swapping the solenoids would have been a pain, so I tried another experiment.

These scenarios now are all with the 6 packs wired normally both front and back and the rear air leak has been fixed.

Raise coach fully and disconnect both travel solenoids.
Put coach in travel.
Connect left travel solenoid only.
It takes about a minute for front left corner of the coach to drop to the point where the HCV stops exhausting and it stabilizes.

Raise coach fully and disconnect both travel solenoids
Put coach in travel.
Connect right travel solenoid only.
It takes multiple minutes (I unfortunately did not time it, but will do so in the morning) for the coach to drop to the point where the HCV stops exhausting and it stabilizes.

I am now thinking that there must be some blockage in the right travel portion of the six pack. Perhaps someone used PTFE tape at some point in the past and it has gotten caught up in there.

I'm trying to convince myself that the low flow path on the right side could shift the point of equilibrium to be such that the front left ends up quite a bit lower than the right. IE the front stops dropping as the HCV sees it as being too high. The left drops faster than the right due to faster exhaust rate.

I'm not sure I am all the way there yet, though, considering the pressure must be the same in both front bags at equilibrium. But the rear HCVs play a role here as well, so I'm not fully decided either way.

Tomorrow morning, I am planning to unbolt the six pack to where I can get the travel solenoids off for inspection. I'll also measure fiberglass to ground