TomS - I have new brackets (complete with screws) from Melvyn Rutter so I just need to fit them. The old rusty ones can be discarded. As a matter of interest the threads are 2BA (one screw) and 4BA (three screws).
+4 1986 - Royal Ivory / Blue Volvo 123GT 1967 - Pearl White / Brown (pristine and very rare)