Ok after I stressed over how to stop the sunroof leak, I took the glass off and removed the gasket.( found a loose screw holding the glass. I cleaned everything; rails, tracks,glass,etc.Cleaned the gasket and lubricated it with silicone lube. Put it all back together ,measured (rave) the distance from front of glass to rail. It rained hard today and no leak. Hope this got it. If your sunroof leaks check the torx bolts to see if they are loose and lube the gasket. This MAY stop it
Also Greased the rails and it operates much smoother. Love the 99