Hi, I noticed that my shark fin antenna has slightly lifted off the roof leaving a not too noticeable dent on the tip of the roof. The antenna is now loose and it has a gap in between the roof and the base of the antenna. I don't recall hitting the garage door but it could have also been vandalism. I am just edgy that water and debris could find its way inside. I believe that the bolt needs to be tightened. It would be a great help if anyone encountered a similar problem and what they did to fix it.