Final a local glass man that has been doing windows
for 30 years and ask him about possible causes.
Years ago I had a windshield crank in the middle
going straight up. Friend owned the car first. So
I told him and he said he had the windshield crack
that way before.
When the glass man was installing the new windshield
I told him that this was the second windshield that
cracked this way on the same spot on this car.
Glass man was glad I told him. For he now could adjust
things to prevent this new windshield from cracking.
I don't remember what he did but the new windshield
did not crack. Jeffrey