Contact Steve Massey at myastroshop.com.au (email
info@myastroshop.com.au) - I had him order in all manner of spares for a Sphinx SXW (I still have NEW blue side covers etc).
He ordered me in the entire replacement head (spindle included) - it was not much at all. Get in SOON though as Vixen does not make the SXW now and parts are running out.