MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
It's a minor detail, but the thin tread goes on the inside of the base, while the regular tread goes on the outer edge.
So there are 4 treads on the front and back. The two middle treads are the thin ones.
200% sounds like a great size to print.
Hope it turns out.