This project is currently being researched and developed based exclusively on DH original drawings - unfortunately some key information is illegible or missing completely on the set I have.
I have previously posted some queries regarding construction and I would acknowledge the valued help from forum members.
However it would be impractical to continue posting queries as I am sure there will be a lot more.
Therefore, I would be obliged if someone could provide me with potentail sources of drawing data that hopefully will help me conclude some of the pending details.