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.
Attaching pictures of my install. I was able to get things to fit using my initial print, so Gen C I think, just needed to have it just right to slip over the heat break while the hotend was removed. I can measure the slot distance from edge later today and post another update as well.
Edit: fixed misstatements and clarified which version I installed (not the one linked in the parent comment, but an earlier iteration)