You can fix it yourself, go to one of the on-line suppliers that sell Airstream parts. The part you need is called a "Zues fastener" they ar commently used in light airplanes.
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RUBBER RECEPTACLE, #82-35-306-10 STONEGUARD/WRAP PROTECTOR
Rubber Receptacle, #82-35-306-10 Airstream Rockguard
Turn fastener stud
Turn fastener stud for Airstream Rock Guard ..
Get both parts, they are easy to install....
Old age is coming at a really bad time!
1996 34' Excella 1000, interior totally redone, 2003 Dodge/Cummins HO, Diablo tuner, 115 gallon aux fuel, Bedslide, Airsafe/Reese Dual Cam, and a bunch of other stuff