Hello Dave,
I though to buy a used steering wheel but they are usually in quite bad shape, especially the leather. Mine is mint.
And BMW made me change my mind with a new one....
I already cleaned and greased but, unfortunately, no result.
I was thinking to restore the connection with the metal base by adding/soldering copper little strips over the old or just remove the old copper plated points (and see what is below🤔) and add (soldering) new ones. At the end of the story, they are not working anyhow......I cannot do big damage🤣🤣🤣🤣
Keep posted, thanks for helping
Andrea