I don't appear to be able to edit my original post so answering some questions and adding the missing photographs here..
When you edit your post to add the missing image please rotate the images. It's more difficult to view / understand when it's sideways.
As for the scribers, a builder could custom make some to match what you have. They look to have just used the ones that come with Linea cladding
Based on the off-cuts he left these were made by him, I just dont know why he wouldn't have used the old scribers as template though but perhaps I am too naive.