Dear Vinyladdict: Unfortunately with the commercial tonearms ( vintage/today ) that are dinamically balanced designs ( a desirable tonearm characteristic. ) like seems to me the Rega 301, the tonearm must use a VTF mechanism ( independent of the counterweight through a dial VTF control. ) to set the VTF, almost all ( if I recall. ) but Micro Seiki MAX 237/282, use some kind of spring to make that job but this VTF springs has its own resonances ( micro-resonances/vibrations. ) that degrade the signal cartridge performance.
The Jea48 advice to set the VTF through the counterweight ( static tonearm balance way. ) and not through the " springs " give you a better quality cartridge performance.
From my tonearms/cartridges experiences IMHO this " little " change in any dynamicaly balanced tonearm ( to static way, including the MS ) is worth to try it: the sound reproduction " suffer " a change for the better almost always.
Regards and enjoy the music.