Convertible windshield trim

Yeah, he has the new piece of trim with the lock strip on it made for the car, but he say's theres no place on the gasket to snap it into, are there 2 different kinds of gaskets or something? I know nothing about covertibles

Is he sure it's a convertible windshield gasket? He may have installed a hardtop gasket without the trim option, so there will be no channel, or a later model hardtop gasket that uses trim clips instead of the lockstrip.