Thank you for the replies. They all suggest replacement, which means I drive it as is, put a bit of bog in holes for a while, then ultimately replace the wings. Alternatively, can I pull out the wire and replace it with aluminium,stainless, or some such thing, or put an anode on to sacrificially prevent more corrosion in the meantime?
Even for a highly skilled person, replacing the wire is a really tricky job. Plan A sounds your best potions.
