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.
Dry PLA is far from slippery so try giving the moving parts a light spray with a silicone lubricant. This will become completely dry, so not sticky, but very slippery. As long as there aren't and significant parts that bind (which can be cut/sanded to fix) they should all slide well...
I hope this helps.