Thank you all for answering....the hose sloped down and had no restrictions.....possibly the gauges are off and it wasn't that full.
We were reallly accustomed (after nine years) to our old Jamboree and its idiosyncracies
One interesting thing I noted was that the Valera (sp) brand black coupling would not fit the Airstream's white coupling; luckily the dealer had sent a white fitting that coupled nicely.
How well does Airstream's "clean out" by attaching the shore water really work. On my old rig I had a special hose for going in the people door and putting down the stool; then I was really sure we were cleaned.