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.
for section 80 and 90 there are files with a thicker wall.
it must be done by hand - I would provide it but I have less time... sorry
In Blender you can mark the inside and scale it.