Big updates, spare parts?

[Dave]

Short story is that a buddy and I just massively upgraded Aluminatus serial #10, and it's a way better machine now.  New driver board, RaspberryPi for processing, totally new extruder, etc. 

The one remaining fly in the ointment is the leadscrew nut.  While we have quotes from PBC to replace the whole motor/screw package, they won't sell just the nut. 

I don't suppose anyone here knows of a low-miles Aluminatus collecting dust somewhere, available for purchase for spares? 

Sure is cool to see this thing run again.  It's fast and quiet, too! 

Dave