I'm not sure that it's a structural problem. I have in mind some severely oxidized, actually partially corroded aluminum masts I've seen for years on 60's and early 70's vintage boats; Santana 22's, Cal 20's, Cal 25's and so on. They look like the dickens but they're still standing.
I suspect that paint might be the only option, but what do I know?.
Last edited by AlanH; 07-01-2020 at 11:12 AM.
1968 Selmer Series 9 B-flat and A clarinets
1962 Buesher "Aristocrat" tenor saxophone
Piper One Design 24, Hull #35; "Alpha"