small win for me. we had pretty heavy storms last night here in arkansas, heavy rain and such. not a drop of water in the truck this morning, so it looks like i was correct on the top plastic molding on the sunroof glass as the culprit. i ran a very fine bead of flowable windshield clear silicon right on the edge of the plastic and where the glass meets it, not enough for anyone to ever notice unless i pointed it out, and the a small amount over the split in the plastic trim along the front of the sunroof. i believe i saw a thread here one time that discussed the adhesive under that plastic getting old and leaking, but for the life of me i couldnt figure out how to remove it when i had the glass off.