The double/triple laminate walls, associated with the assembly of these models, and the intricate brass sub-structure eliminates warping. IMO. Each wall section has an inside, outside, and middle wall filler, with enough space for a window to slide, Up/down.
You got to admire the precise detail of these models. I have yet to find something that did not fit as it was suppose to. Even a flat sheet attached to bowed roof rafters came out well.
The fragile cupola once assembled, fit well.
Add the roof panels, no clamps or adhesive applied. Not sure about completely glue-ing the model together.
