Vertical seam on 360 boundary

Hi,
I'm sure this has been reported before, so this is a combination reminder and plea for fixing the occasional vertical seam that shows up on the 360 boundary. You can see it in this image, (still a work in progress obviously, so please don't post it to all your friends just yet...)
http://www.360cities.net/profile/mark-fink/image/vassar-college-02-rocky-304-poli-sci#143.10,0.40,70.0
Also, there is slight pinching at the zenith that is related to the vertical seam.
Thanks again for such a great piece of software, despite these minor issues!
Mark
I'm sure this has been reported before, so this is a combination reminder and plea for fixing the occasional vertical seam that shows up on the 360 boundary. You can see it in this image, (still a work in progress obviously, so please don't post it to all your friends just yet...)
http://www.360cities.net/profile/mark-fink/image/vassar-college-02-rocky-304-poli-sci#143.10,0.40,70.0
Also, there is slight pinching at the zenith that is related to the vertical seam.
Thanks again for such a great piece of software, despite these minor issues!
Mark