[Richard]

I had him do a quick check of the connections at the six pack with nothing obvious reported. If he had a problem with solenoids then both the travel solenoid and the raise solenoid would have to remain closed for the corner not to raise in travel or manual. I think the question about supply air is a good one . Does the engine keep up with the leak? And with engine off how long does it take to leak down? For the second test the ignition switch will have to be on to open the travel solenoids