1971 Dart windshield leaking

My 70 leaked from the left front from when it was new. Wasn't cowl, wipers; the gasket. And good luck. Buddy with a 69 Charger restro- we needed a gasket-plant burnt down; now prices triple. Finally find one, get local guy to install. Leaky leaky leaky. And I helped him; he did use butyl.