well I checked the drawing of the brochure, the 60° is good (and as indicated before, I didn't use that 60° correctly).
now, the 23.5° angular offset seems to be impossible with the drawing. A 21.5° angular offset is more plausible.
need to work on the various small dome / spindle center distances to see if there is something to do with that...
I don't know if there is a real possibility to understand the geometry of this tonearm since at least two data are wrong : the angular offset and the null points. (but drawing a 12" tonearm is possible
if the stylus point is not aligned with the axe of the tube, a screw og the headshell seems to be aligned. could you confirm ?