i have a leak from the plastic molding (Inside) that runs along teh top of the windshield over the steering wheel. right where it connects (overlaps) with the other piece of molding. usually at night or when it rains..its rare but does happen. so i bent inside the car and looked up the windshield, so i can see teh front of that plastic. and i noticed a bead of black sealant or something running just inside that plastic and sometimes coming out....is this stock? or was it an attempt to fix a leak..can some of u guys check for me....also would replacing the windshield fix this? (its pitting and MIGHT crack (lol) and i have window INS) thanks.