Good morning Yorrick and Andrew,
exactly the same with my Speedo. To my information the new VDO speedo can't be adjusted by yourself and the speedo must be back to the factory. So far the information from the main Service dealer in Germany. I bought my car from Williams and ask them to fix it - no response -.
Then I got the information that a Morgan stuff Chris Brid..... should be THE person to fix the problem. I sended a very kind email to the factory to that person and asked for help. - no response -
After that I gave up and will try to get it fixed when I am this summer in the UK during the Thrill on the Hill event.
Torsten