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.
Yes, the pocket in the cover keeps the spring in place. The only part of the cover that would ever touche the spring is right where the spring seats on the cover, the rest is just clearance.
The washers go between the wire and the nuts. Definitely not required to make it work.