If you are using the JMW9 series unipivot arm I would remove the anti-skating from the arm altogether. I tried it on my Scoutmaster and found it to do more harm than good. I have had no problems with skipping either way however. According to some the JMW9 was designed to use the twist in the cable from the arm to the interconnect box to provide the anti-skating. Some felt it was not enough so VPI produced that add on anti-skating as a solution.
FWIW
FWIW