Rain today so I took another look. I found the antenna is loose and I was able to feel some moisture around it. I still don't see any trace where water is flowing, though. I guess I'm 90% convinced it's the antenna that's the problem. I took a good look at the old antenna. It needs more than a mast. Anyone know any good antenna repair/parts threads?

I also found the right side is still getting some water. I now can see water coming from the tail light (the smoking gun) on that side.

Thanks to all.
Barry