Safelite I had lots of leaking problems as they used their own spec glass in my 1988 VW Jetta GLI 16v. Apparently I had a rarer VW Jetta actually built in West Germany due to the high performance model. The majority were built in Mexico and the steel stamping presses including windshield frame was different enough to make slight dimension change.
Safelite came through and ordered German built dealer glass that properly fix my windshield and never another problem. They did this at great loss since they already put in two of their own windshields and then had to pay VW prices for glass the third time.
I was impressed by the shop although aggravated at the situation.,