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.
Heh, nah it happens, it's kind of a pain to keep track of everything. I don't know about the distance/dimensions tho, like... I'm a code monkey, I import() an .stl, make lots of squares, then add a million translate() to position things and... voilà !
if I import both designs and line them, your V12 motor mount is ~12.67mm higher, but it's worth double-checking.