The cab appears to be very, very thin, with two tested overlapping side pieces being the same to 7 decimal points, (or maybe more).
So maybe scaling up everything by 10 to the power 7 or so would help?

- Brian

Edit, scaling by 10000000 did not reveal any difference in the dimensions of two tested overlapping side pieces of the cab, so there seems to be no thickness,
so the "Solid" designation seems to be faulty, or else ???

I did not try 15 decimal places :-)

How is such a thin cab to be manufactured?
Even gold leaf only thins down so far:-)