[Ironangel]

The pinch weld needs to be a clean smooth (painted) surface so the gasket can easily slide over it and make a water tight seal. Watch a couple of videos and use the proper tools. The pro's use a woven or braided 1/4" nylon rope. Using a lube only makes a hell of a mess and invites leaks, clean rubber on clean paint will seal against any leaks. Use plenty of tape, I tape my glass every 6" or so especially at the corners. A properly installed gasket and glass wont need sealant. Drip rail leaks are often mistaken for windshield leaks so address your drip rails while the windshield is out! https://www.youtube.com/watch?v=SOU_0HpS7To Shop around and get one these https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 so you can use this https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 to seal your drip rails once and for all. A wire wheel on a 4" grinder with a sharpened screw driver will remove the old drip rail sealant. One package of sealant will do one truck. "Good Luck!"