I spent several hours just looking at three-quarter views of Sulzer 101s. Eventually, it occurred to me through my alcoholic haze, that the upper horizontal line of the front windscreens is some way above the top line of the cabside windows.
The resin shell doesn't quite render this feature, so pencil lines were marked in:
This is to remind me to open up the windscreens. The bottom edges might need a lift up to correspond.
I think my eyes are playing tricks on me, but it looked as though one end of the shell is asymmetrical. I'm going to give that end a bit of a going over with the digital callipers and the pencil....
Incidentally, the GA drawing available on the Resources part of the Forum is useful, but do watch for a couple of things that did not seem to make it into service life - so far I've noticed that the B101s had two-pane cabside windows, rather than the three suggested by the GA.
Also a minor difference in the marker and tail light boxes, being arranged White Red, White Red, instead of the GA's Red White, White Red.