Monty is doing fine, his spot has got a bit duller and I don't think it is going to be a big issue - hopefully it won't leave a mark after a few sheds.

I think I have a culprit too - I had just replaced one of his hides with an Exoterra reptile cave. Loking at it the moulding process had left a few imperfections on the bottom - some with quite a sharp edge which I have no sanded down. I imagine that he scraped his nose on a sharp bit trying to start his shed off. I can't prove it is the cause but I am annoyed. It's a nice hide and I had just ordered another one which also came with soem sharp pieces below that I have no sanded over. So just a warning to anyone else using these products. I will try and make contact with exoterra in a non confrontational fashion to let them know there may be a QC issue somewhere.