prior post: "as his tt is a Clearaudio with magnetic tone arm."
quick look at Verify Arm, anti-skate, pg 15, also from below.
https://clearaudio.de/_assets/_pdf/manuals/tonearms/CA_Verify_E+D.pdf?d=1667911999
when they say counterclockwise is weaker, I would interpret that -5 full turns is fully weak/ZERO
Why did you mention Rowen TT1? Is it a variation of Clearaudio? Made for them by Clearaudio?
https://www.rowen.ch/en/data/rowen_tt1.php
Confusion: Clearaudio has a TT1 arm .You don’t need anti-skate on Linear Tracking Tonearms
https://clearaudio.de/_assets/_pdf/manuals/tonearms/CA_Statement_TT1_E.pdf?d=1671461176