This is the company that carries a lot of the Golde Top parts here in the US. Call them, tell them what you need, and see if they have it. If they do, please post here for others to know.
It might have been John Draxler of Tbird Ranch that you were thinking of that has that part. You might try him also.
As a final chance, there is the VW company in England that stocks a lot of parts I am told, and that they fit our Golde Tops too. Their website is:
Let us know if any of these places are able to fill your need, please.