I think the best advice was noted by "nryn" is a separate thread about quality issues, see below. I did the same thing. My 2018 only had a 2 yr warranty and it took 2 yrs and 27,000 miles to get everything identified. I would say Jackson Center could fix the items on your list in 2, maybe 3 days.
The only thing on your list I would not wait on Jackson Center or a Dealer to fix are the AGM batteries. LifeLine has a 5 year warranty on the batteries. Disconnect your batteries for a day and then check the voltage at the terminals. I had one read 12.4V and one 12.9. Lifeline replaced the bad one at a pro-rated rate. They mailed the replacement straight to my house. It made a big difference not having a defective battery.
I think the expectation that new Airstream owners have that these trailers cost a premium and are fretted over at the factory is common. I did a lot of research before buying, most of which was on this site, so I knew what I was getting into and wasn’t disappointed at all. I think the vibe I picked up at JC is that there is a wide gap in work ethic between the service side and the production side of the business. Service side will take care of you and it’s in their best interest to fix problems for good and to your satisfaction. The production side metrics are, I’m guessing, more quantitative than qualitative. Somehow the math must work out for Airstream to make production side decisions that inevitably have service side consequences for some percentage of customers.
My advice is to use the trailer hard in the first year, break everything that is going to break, and bring it into JC or a good dealer for warranty work. Make the most of that 3-year warranty. (end Quote)
2018 GMC Sierra 2500HD Duramax
Equal-I-zer Weight Distribution attached to the Gen-Y Torsion Flex Weight Distribution Hitch