Windshield Gasket Question

Regular 3M spray oil will soften them up some without making them fit a school bus. We also spray the oil on it right before installation. It makes things alot easier going in. Spray the pinch weld also. Run a rope around the rubber pinch weld area with the rope started and ending in the center on the bottom of the glass. Have two people on the outside one on each applying constant pressure. Start pulling the rope making sure the gasket is fitting over the pinch weld from inside the car. The persons on the outside can slap the glass with a cupped hand (keeps from braking the glass). You will see the glass falling into place.