The BB Core prints fine and has not clogged. Overall I have been very happy at how well everything has worked out after doing about 10 prints, mostly using PVA supports.
Any suggestion on how to clean the nozzle base of the burnt on PVA? Heating it up and scraping it off or maybe soaking in water? I am thinking about making a stand to hold the core so the nozzle sits in a reservoir of water to try to dissolve the PVA over time.