Hello Will,
I am sorry, I can not contribute to your question.
But: concerning your Triumph Stag, could you show a picture of this beauty? I owned one from '74 to '79, had a lot of fun and some problems mainly because Mr. Lucas was not well known in Austria.
I wish you lots of happy miles with your cars.

Karl

Karl
Life is hard in the mountains

2009 silver +4, 2013 red C4P, 2014 yellow M3W gone to a new owner