And onward with the fiddling. Sand pipes have gone on from a bit of microrod from the scrapbox as have what I take to be remains of draincocks from more of the same. The operating rods from the wire of a defunct pair of brushes (google- drum brush). Note the chimney was absent at this stage - it would only have got knocked off.
There was only one bufferbeam so a replacement was cut from a suitable thickness piece of plastic (originally part of an N gauge Lima shunter I think) again from the scrap box, using the available one as a pattern.
Chimney on, and test fitted to the chassis complete with bufferbeams and steps.
The roof needs some thought still, as does the cab interior which obviously is very open.