windshield gasket leaking on 420?
 

Today I got in the 420 and there was water in the tray in front of the shifter. It appears to be coming from the rear view mirror. Right along the windshield at the top of the gasket it dry for where I can put my fingers. There were maybe 10-12 drops still on that top plastic piece within a 3" radius. Could it maybe be somekind of sunroof drain clogged?
Thanks so much, my dad is already saying he wants to just get rid of it.
David