If you have UVLayout, it would take almost no time at all to straighten the border of the back. I don't know why I didn't do that at the time... An oversight on my part to be sure. Anyway, you could totally do that. It wold make her incompatible with existing texture sets though, so you should do it on a copy if you do it at all.   Hmm...had to be a reason why I didn't do it.