XML/Flash Photo Gallery Tutorial - Images Distored

I recreated the XML/Flash photo gallery featured here: http://www.kirupa.com/developer/mx2004/thumbnails.htm

I have the gallery contained within it’s own Movie Clip. I resized the mask for both the main picture, and the thumbnails, and I moved the “boundry” clips to the end of the new thumbnails mask. Other than that the only things I have changed have been the background and the XML.

For some reason, the image that is being loaded when a thumbnail is blown up more than the actual dimensions of the image.

You can see what I am talking about here, in the section labeled “Portfolio”: http://www.whitetrinity.com/test

Any suggestions on how to fix this?