Thank you for the replies guys,
I will research zinc plating them, was not sure it could be done with them still riveted together. I live in Australia and a long way from any platers so i was looking at kits from Cadwell, have you used any of these kits by any chance?
http://www.caswellplating.com.au/store/store.php/products/copy-cad-or-zinc-plating-kit-6-litreAlso 3 of the larger springs are non repairable, is there a suitable replacement that you know of?
Appreciate the help.
Cheers
Corey