I was getting my xt2 ready for my little girl's birthday tomorrow I was checking out the lenses and decided to take it off and I notice at the bottom of the sensor there was a Mark. I blew it with a air pumper and use a light but it didn't move. picture attached it looks like it's on there pretty good I don't think it's something that fell on it I'm wondering if it's a connector to the sensor or something? It loos like a burn mark. I only noticed it just today I don't remember ever seeing it a couple days ago or the last time I use my camera. Should I be concerned should I be contacting Fuji should I try to touch it with a swab one of the dry swabs that you use to clean your sensor?