Aha!  The lumpies I'm seeing are a result of my own error.  I forgot my own lessons from the tutorials: de-select any brow overlay geometry on the Source actor.  The lumpies seem to have been interference between the Antonia brow and skin materials.  These average out with the closest vertices, but the raycasting selects one of the candidate polys in a bad set of candidates, and goes to the correct or incorrect surface, apparently at random.

I also notice that the lacrimals are going blooey now.  I think this is a result of using averaged normals to steer the normal we send.  A normalized delta should steer us more carefully.  I suspect this probably lies behind the noise which is still cropping up between the eyelids and brows.  It's a guess, of course.  But all of the places where I'm seeing noise now are those where the mesh curves back in on itself, creating concavities.  I suspect this is a cue that the normals are at cause.  In most places the averaged normal would end up being similar to the delta vector I keep going on about, but these would be places where it might not be.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.