I have a really annoying problem with my TF300. Somehow a finger print-shaped mark is clearly visible just off center of my screen. I've tried to show it in the photo below but trust me, it is more obvious than this picture shows; especially when watching TV/movies etc. Does anyone know if Asus will repair this under warranty? Also, my TF300 is unlocked. I'm guessing I'll have to lock it again before I return it? Thanks all!