It was the moment of truth for carriage 125 the other day.
Having completed the ends with my best guesstimate of their respective widths there was no reason to delay gluing it together and see whether I ended up with parallel carriage body or not.
I'm relieved to say it looks like I have, and I'm rather pleased with how it's come together.
The cast resin vestibule end fixed on without difficulty to the styrene body sides.
More importantly I think, at this stage, it's definitely got the look of the prototype, wouldn't you agree?