Elroy,
The Crafty V, G, & G1 sockets all have the old retention broach and should work well with your locking extensions. The later Crafty G2 and G2D sockets have the newer retention broach with lot's of "vertical play" and probably would not work well with your locking extensions. For that matter, these newer sockets do not play well with any drive tool of any brand.
Just my humble opinion....
Any luck getting in touch with the Holo-Krome facility? If not, you can get similar replacement locking extensions from Sears.com today