The ''cantilever weight'' you mentioned is actually anti-skate
weight. About 1 g. if I remember well. I am not sure if there are
more versions of Pritchard than one. My sample had problematic
(plastic) headshell and wiring. Rewiring is more ease done than
a new headshell. But to get an more rigid coupling with the
arm-wand you will need a new headshell.