Hi B&S Tbird,
Roden is quite right and you would be best to ask in the Hinkley Classic Triples section.
However, I also have a Thunderbird and can point you to an old post that may help?
See
http://www.triumphrat.net/hinckley-c...tructions.html
Good luck, and hope to see you soon in the Hinkley Classic Triples forum.
Geoff
