I have a current model XXL with the newer Z axis plate. All of the Fusion 360 models and PDF drawings are all for the older plate that is longer and flat. Does a new drawing exist? I would rather not pull it apart to design a dust boot. 
I would like to use the existing Fusion 360 model and replace the Z axis plate and design from there.
I’m afraid that that drawing hasn’t been published and that part post-dates the CC-NC license of the launch/Sparkfun version of the SO3.
Ah…thanks. To the drawing board…well, digital drawing board.