Hi all,
a bit of progress on this project.
The tender doors that close the gab between the tender and cab.
These are cast onto the tender at the factory.
I have a pair of brass doors that are hinged, so that they can open and close.

First photo shows the original tender, black arrow shows the door that now has to be removed.
Red arrow the hinge pin that needs to be replaced.
Second photo I holding the brass door in place to see for fit.