Luck, as far as the signature issue take that up with admin.
Regarding the continue use of push in fittings the simple answer is do not.
There is likely no single issue more annoying and more universal than air system leaks due to aging push in fittings and for an owner to continue to use or reuse them is just plain foolish.
FWIW, a long time Prevost policy is if the air bags hold air (keep the bus up) for at least three days they have succeeded in making a repair. Once they turn over a coach to you after a suspension system repair you can hold them to that standard. Do not expect more.
Jon and Di 2006 Liberty Elegant Lady, 2021
Jeep Grand Cherokee, 1950 Ford
Knoxville, TN
Owner of three Liberty Coaches since 1990