Ferris carving wax

I know there has been a discussion on changing the hardness of
carving wax. What I am looking for is the old Ferris carving wax
of 20 or so years ago. It was about then that they changed the
formula for thier wax and it lost some of its carvability. Does
anyone have any of this wax that they would be willing to sell
or does anyone have a formula that would duplicate this wax?
Michael has been generous with his offer of his new injection
wax and we will try that. But it seems like a lot of things the
older jewelry products were better .