Also, the reconstruction teams cheat very often, and their work is overall sloppy, and very unprecise, they are mathematicians and others who aren't obsessed with detail, and that's why they suffer from stuff breaking up and so on.
They should be master carpenters, master axemen (as they are known here, we have almost university grade studies available for carpenters), people who understand wood, and who can read detailed plans, and who can follow the plans to the smallest detail.