This covers many threads, but this seems the best place to post it to.
As to storing your coach with the air dumped. I can't see how any damage can be done to the air bags by sitting with the air dumped. The Neway specs say that the "jounce," when the coach suspension bottoms, is stopped by an "internal rubber bumper in the air spring." If this can handle the force that might be generated by a hard bottoming, then I can't see why it would hurt to rest on these bumpers. As to past questions about damage to shocks caused by lifting the wheels off of the ground with the jacks. The same sheet lists the "rebound," the chassis lifted to the max, as supplied by "High Capacity Shock Absorbers."
2007 Limited SE 40fdts
Las Vegas, NV