I just opened my Christmas gift, a tomtom one le (v4) from Best Buy. I backed up the firmware and did updates--all works great, except...toward the bottom right of the screen there appears to be a dead pixel. Is this normal or acceptable? It is not extremely noticeable, but seems like a 3.5 inch screen out-of-the-box should not have any dead pixels. I am considering exchanging it for a replacement; that is, if my local store has any in stock. Any suggestions?