The reason for the bullseye is that you have the link in a couple of places in the mailing. Instead of reporting at the separate locations, they are stacking. I have another customer that is seeing the same behavior. I am adding you to the report.
For now, the only way around it is to set the link in just once. Don't forget you can also see a list view of the clicks in the clicks tab and in the List view in the click map.