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 don't have an Anet any more, sorry. As I recall, it was pretty easy to do, so I'm sure you could do it yourself. Just compare my .scad file to the one from Prusa's github (which is linked in the details). You just need to find the same place in the mk3s X carriage and make the same spacing change.