I’ve been playing around with the export settings for placing models in SketchUp, but there has been a problem.   Basically, circular elements of my models are having their vertices merged so they look like they’ve been crushed:

Something is not right here....
That's better!

Turns out you just need to check the tickbox “Create Shape Groups” I don’t know why so if anyone knows just post a comment after this post…

Just check the box....