I am well aware of that thank you, also I am building this to suit myself and not others. I do have a DeRosa Pantographed seatpin which was original but I chose not to use it. The original bars were aluminium and were made by Deda. I also said that the carbon bars were from the DeRosa factory and not an integral part of the original machine. See attached photo to view the original bars.

Sincerely
Chainwheel.