Btw, alternatuives magnesium headshells for your 1200G. Maybe and just maybe one of them can outperform what you have, you have to test it are only alternatives :
https://www.ebay.com/itm/AUDIO-TECHNICA-HEAD-SHELL-AT-MG-10-from-JAPAN-Japan-new/183366770516?epid=2...
https://www.ebay.com/itm/Audio-Technica-AT-LS12-headshell-with-adjustable-azimuth/302816656736?hash=...
https://www.ebay.com/itm/Audio-Technica-AT-MS9-Headshell-adjustable-azimuth/113137039830?hash=item1a...
https://www.ebay.com/itm/Audio-Technica-AT-MS10-Headshell/223092162897?hash=item33f1544151%3Ag%3ABhE...
https://www.ebay.com/itm/HIGH-QUALITY-AUDIO-TECHNICA-DISCONTINUED-MAGNESIUM-LT12-PHONO-HEADSHELL/263...
R.