funnily enough this came up just a couple of days back he

http://www.vintage-radio.net/forum/s...ad.php?t=22673

to be honest I wouldn't mess about rebuilding a cartridge this common
and low cost unless you have lots of time and patience on your hands.
It would be simpler to get a NOS stock TC8 turnover cartridge off ebay
if you want the orignal look rather than functionality, or even
better, fit a slightly more recent stereo-compatible cart like a BSR
x5H (has output which matches the crystal carts) which will enable
safe playback of stereo records. these are widely available on the
'bay for low cost and the main advantage over your original turnover
cart is the turntable can play all kinds of records.

-B