Hi Nick,
That's very useful, many thanks for your trouble.. I think the old one on my bike is the same age as yours, similar dimensions. I reckon the pattern part makers have tried to make one that fits both types and failed.. It goes back I'm afraid, nice quality but no use if it's too long..
As for Dundry, no problem saying hello - I get a great view of it from upstairs at the back of the house (we live in Long Ashton!!)....
Thanks again,
All the best,
Adrian