Hi all,
thanks for the positive comments.
I've been spending time on the tender.
First I removed and opened the cast on water hatch.
Then I made a brass ring and prepped the Weinert water hatch with a hinge.
My plan is to have this working with a small servo in the tender.

Then I removed the cast on lights and hand rails.
Replaced with brass parts.
The lights will get individual Led's.