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.
How tight are the screws? The fan shroud (for the heat sync fan) is not my design. I provide a link to it for convenience. If you tighten them too much then the fan can be noisy. Also the quality of the fan makes a difference. The OEM fan is very cheap. I recommend that you get sealed bearing fans.