@ odf

That new OBJ is a lot better, definitely a huge improvement. I set LW back to its default 1 micron tolerance and the symmetry looks to be perfect almost everywhere I try it. There are 5 polygons on the brow mesh, the five closest to the X axis, from the bottom up, that don't select in symmetry. The very top one does.
But that's hardly anything to complain about and I can deal with that easily enough.

That is all I've found, everything else seems to be perfect.

Excellent job, and thank you! :thumbupboth:

I might add that the symmetry for it in Modo is the same now too.