SDJR 6-wheeled brake-third model and general arrangement drawing

I clearly haven't followed my drawing or the photo on page 34 of Atthill's Picture History of the S&D, as there should be lamp tops as well as ventilators on the roof and I have obviously followed the lower roof profile of the GWR clerestory coaches from which this was concocted, rather than the higher single arc roof seen in the photo. Of course there is also my reluctance to hack off the GWR's 'G' shaped hand grabs, to allow the SDJR's reversed 'S' shaped ones to be fitted. But this was 40 years ago and I had limited resources. The Guard's door and ducket have been switched - maybe to avoid too many segments having to be cut and reassembled. Why the central rib of the ducket's panelling has been missed I don't know.
Anyway I don't remember seeing anyone else modelling 4mm blue S&D in the sixties and early seventies. There was Mac Pyrke's improbable (albeit nicely modelled) Berrow Branch with 2Ps, some BR standard types & an odd Bulleid venturing several miles up the coast beyond Highbridge, but that was in the near contemporary BR steam period. There were a few drawings and photos in the modelling press and I think there were some 7mm finescale models about.
I have recently rediscovered the July 1993 Railway Modeller, which featured Denys Brownlee's 2mm/1ft scale model of Burnham-on-Sea in the 1930 period. He let himself have the slightly doubtful presence of a 7F up the branch. Perhaps it was on a running in turn from Highbridge Works. I can't remember if they did ever go there for maintenance.