Mitch Klempf of Klempfs British Parts in Minnesota USA has sent in the following spares update:
Here is a link to the left hand side battery side covers that are made of steel, these were made back in the 1970’s
http://www.klempfsbritishparts.com/PANEL–LH–BATTERY–T160–STE-0
These starter drive rings are NOS from the 1970’s
http://www.klempfsbritishparts.com/gear-starter-t160-0
We have a very good stock of parts for the old vintage British bikes. Check our website:
Another thing the members may be interested in are the “Mitch’s Tips”
I have attached a couple for you to take a look at. They can be viewed and downloaded at our website.
http://www.klempfsbritishparts.com/t/MitchsTips
The tip sheets are not exclusive to the Triples, but might be of use for their other British bikes.