My WJ's mirror does the same thing, and my 15's are in a sealed box... //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
I've tried the crazy glue thing... no go. I was thinking that maybe if I drill and tap a small hole in it, and put a set screw in the ball joint closest to the windshield, that'd fix it. Yea... Project for this weekend! Leave the other ball joint free to adjust the mirror, though.