JB123: Hmm, I wonder if it's the straightening itself or the incorrect aspect ratio I used that causes the problems. If I kept the lashes straight but changed the aspect ration as to minimize distortion, would that help?

Looking at your re-mapped lashes, it doesn't look like straightening those out should introduce that much distortion.

I'm happy to take a vote on this one.  If we go back to curved maps for the lashes, I can always supply masks for procedural shaders, so it's no big deal.

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