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 have a very recent V2 model and the arm is different than the one you show; yours will not work on the newest model because the pivot shaft is larger and the roller is mounted differently. I broke the roller shaft (plastic part of the original arm) trying to get the roller off, and had to make a top brace so the roller would be usable. It's ugly, but will work until I can replace the original arm.