Hi,
Well you should be able to see ticks sticking out from under the raised scales if that is whats causing them I think? Also check in the heatpits and in the fold under the chin.
Can you get us a good photo of it? (tough I know considering the size)
It's not uncommon to have a few scales that get lifted or bent back slightly on cage furniture etc - if that is what has caused it then they will be fine after the next shed but better safe than sorry.
dr del