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.
ideally you would want the filament feed bore narrower too, but its so short as is it shouldn't really matter. I don't have a set of the 1.75mm gears to see if the alignment is correct though. It should be in theory, but i'm not certain.