So I've starting reassembly on the '75. Got the headliner in and started looking at putting in the rear vent windows. Have new rubber seals for them, but trying to figure out how to install that seal. Does it just slide in place, or should you put some trim adhesive on it to keep it from pulling down in the corners like I see on so many? I've got them warming in the sun so I can try to get them to pinch into the corners.