Definitely looks to be improving.

I was actually at a reptile shop this past weekend, and when I was checking out their animals, I noticed that one of their adult BP's had the exact same kind of sore/abrasion/what have you in the same spot on his 'chin.' I remembered seeing pictures the that you had posted before... obviously I don't know what caused the mark on the snake in the shop, but I thought it was interesting none the less.