Would you mind saying what are steps 2 and 3, for the benefit of those of us who (1) don't want to do a net search right now, or (2) don't own a Feickert protractor, or (3) do own one (like me) but don't care to go dig it up to figure out what you are talking about when you mention steps 2 and 3.
One caveat: With the Feickert, the markings on the spiral scale are with respect to the pivot to spindle distance (P2S). The stylus tip should rest on the correct P2S mark for your tonearm. It can be confusing. I own the older version of the Feickert, the one in white plastic with the fully circular template. Maybe the later black one that is semi-circular is different.
One caveat: With the Feickert, the markings on the spiral scale are with respect to the pivot to spindle distance (P2S). The stylus tip should rest on the correct P2S mark for your tonearm. It can be confusing. I own the older version of the Feickert, the one in white plastic with the fully circular template. Maybe the later black one that is semi-circular is different.