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.
Oh! Sorry for the trouble. I did not notice the issue when I sliced them (ReplicatorG 0039) but I was not paying much attention neither. Mine printed flawless but now I'm little bit worried about people finding it hard to slice the STLs...
Thank you very much for the comment and the print!!