Window channel help..

[slantback37]

Hi. I have a 37 Tudor. I bought it as a basket case. Everything was gutted. My problem has to do with installing the windows. Both front and rear glass. I have installed the cats whiskers on the door. The sweeps screw to both the garnish and door. It comes with two metal sleaves that the glass slides threw. I would like to know what goes above that?? There is nothing for the glass to sit in except for that. There has to be something that will prevent it from rattling, or hitting the metal of the door.. Thanks..