In between messing about with the smokebox rings, I also detailed up a few of the other parts using either additions from the spares box or those that I made up from scratch.
Starting with the roof, I added the outer skin, fitted whistles from the spares box and the roof vent. The latter I attached to a strip of etch that I bent to allow the vent to be open but so that I wasn’t relying on a solder joint purely on the edge of the vent.

Then I rolled a strip of brass angle to cover the firebox to cab joint.

Then I prepared a few of the cab fittings starting with the cupboard at the back of the cab I made up a couple of door knobs

Plus a third knob for the coal space shutter.

I also fitted a brake standard from my spares box.

This is as much as can be added to the cab floor before fitting or it won’t fit past the beading in the cab openings.

Sticking with the cab I fitted the reverser and made up a mounting/fixing for it.