Duster windshield removal/replacement

A lot of people have good luck without using sealer, but the installation procedure in the FSM specifically states to use sealer "across cowl top panel lower windshield frame area." The installation procedure is actually pretty thorough in the FSM. As post #7 pointed out, the 3m bedding compound is what you want to use. Since it's no longer available, I'm not sure what a good alternative is these days.