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've added the rings and got some improvement, although I couldn't quite fit the 3rd ring on without rubbing up against the bracket. I'm still only at 1 minute, though. What bearings did you use for the balance?