If I'm not mistaken, there is an excellent slide repair shop in either Oregon or Washington. I don't recall the name (helpful, I know) but at least it could point you to further inquiry.
RVM#78 - -USAF- F-15 Eagle Radar Vet
'5 Fleetwood Revolution- '15 Airstream Intl Sig. 27FB
Jay, Andrea, Stella '14 Ram 3500 Aisin '18 ORV F30RLS