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 have the same Problems from time to time.
When my UM is over extruding a bit, the holes get too small.
I upload you the Rodspacer as Sketchup file right now, then you may change the radius as needed.