Hmmmmm. . . . .
Speaking of setting the Ride Height, Which way do you set them for a bit Softer ride.. I have the manuals but they don't tell you that...
The manuals don't tell you that because you're not setting up the ride for a Cadillac/Lincoln. You're setting up the ride for an industrial piece of machinery, in this case, a transit bus.
Do you really think you can second-guess the team of factory engineers who designed the suspension system for your coach?
Set the ride height to the correct setting per the shop manual. That's the setting for the best combination of ride quality and handling, as determined by the factory.
And install new shocks. . .
BTW, the ride characteristics of a transit bus are quite different than those of a highway coach. Guess which one rides "smoother". . . and why do you suppose so? Especially if they're both air suspension systems. . .
FWIW & HTH. . .