I can't offer any advice because I don't have a clue but....

Somebody had just posted some pics of what they thought was scale rot. If you have not seen them, you might want to check them out to see if it's anything like what you are seeing on your bp. Here is the link to it http://www.ball-pythons.net/forums/s...ad.php?t=59936

Is that darkened area indented (I think it was the first part you pointed out) or does it just look like that? When you first showed it I gasped because it looks like it's a sunken in area and a large one at that.