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.
I find this design doesn't work for me, the trail the belt goes through is too large and allows the belt to slip through.
EDIT: Turned out to be underextrusion. 95% or 100% works fine with proper e-steps.