Difficulty scaling an object

hi,
I want to scale down my rhino 7 model down to 1:300. However, I’ve been ‘unable to transform said object.’
Any help will be greatly appreciated.
1300 unscald.3dm (17.3 MB)

It seems the objects that don’t scale have infinitesimally skinny surfaces. Explode them and join them back up surface by surface until you find the problem surfaces.