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.
A little jiggle on the lens is to be expected. As long as the pin on the locking ring is fully seated in the corresponding notch on the lens, and as long as the lens doesn't rotate freely to the unlocked position, it should be alright. Poor print quality can also be an issue. I'd still keep a hand on the lens at all times if you are unsure.