The overhang on the base is not printable without support so I took the opportunity to split the model in a different spot.
The middle and top parts however I combined and scaled down slightly (from 214mm to 205mm) to fit my printer.
I have also extruded a circular space below the base to a) make it easier to remove from the platform, and b) provide a place for me to glue washers/weights if needed.
Note: This does not have the centre channel for dowels, wires, etc., etc.
Print both parts, and press fit together. And follow the rest of the instructions on the original object for the arms and cups.