My 600+ gr pastel poss spector or poss yellow belly.

Got him July 2012 at a retile show. was told he came from a specter yellowbelly pairing, obviously pastel in one of the parents. I have always thought he looked different then my other two pastel girls. He has a deeper black, more granite pattern, and a more highlighter yellow look to him. I've looked at a ton of pastel specters over the past year and I've found dead ringers and some that look nothing like him.
Please tell me one of you can tell me for sure one way or the other on his genetics, even if it's just pastel. this has dirven me crazy for over a year now.
Well here's the outside pic from today:

and here's an earlier pic of his belly (inside):