2007 Kia Rondo. I need to replace the antenna base. It is attached from the underside of the roof, near the rear edge and tailgate, so I have to remove enough of the plastic trim to drop the headliner down a little. I was not able to get the trim loose in the areas in the pictures. I think I saw metal bolts of some kind holding the trim pieces in. I am hoping someone might know how to get these pieces off, and maybe recognize if I need a special tool to unscrew the bolts that look like there is a figure "8" in the bolt head. Please have a look at the pictures, if you might be able to help. Thanks in advance.