I first noticed the presence of serious corrosion underneath the two roof antennas when I was using my air cannon to dry off my room, and I held up my antenna slightly in order to blow-out any of the water that sits in the space underneath it. A ton of white sand-like stuff came flying out and...
I got a TEKK short antenna. It worked great until I went through a car wash and it snapped off. I couldn't get the post out of the antenna base and needed to replace it. I ordered one through Phil Long Ford for $44. It would have been really easy if i could have removed the base at the hood...