Our dingleberry P.O of our Sunstar removed the AM/FM antenna from the center of the eyebrow roof and sealed the hole. I think it was because they installed a Pioneer infotainment system and had Sirius/XM.
Luckily, all of the wiring was intact behind the overhead cabinets. I bought a replacement Magnadyne antenna and installed it.
I had to cut the caulking around ball
concerns me. This is a typical response to a leak on something that was not installed correctly in the first place. On our Sunstar, found 3 or 4 layers of different household caulk trying the seal things that were improperly installed.
The only 2 places that antenna should need sealing are:
Between the base gasket and the roof surface with a non-hardening products like butyl tape or Tacky Tape.
And, then, if you are a belt and suspenders person, run a bead of self-leveling Dicor around the joint between the antenna base and the roof.
The ball joint shouldn't need sealing.