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MikeJ: Why does your lip material have two polygons more than my lip material? Bug or feature?

It's just where I put the seam that determined that. Since the lip UVs  are separated from the head, what at one time was part of the face material became part of the lips.

Let's rephrase the question then: why did you put the seam where you put the seam? I was just a bit surprised that you included the two polygons between the lips and the philtrum in the lip part, is all.

-- I'm not mad at you, just Westphalian.