Had an AT-1010 (i think it is called) tonearm laying about. Mounted it on a spare Technics sl-2000. This tonearm might be very similar to the one used on the at 120lp or any other hanpin clone.
Using the hoffman protractor (Stephenson - my preference) ended up like this with an EPC-270 with new jico stylus:
Sounds excellent - for a cheap cartridge, that is
Using the standard technics gauge (52mm straight) won't do in my case....