sorry another 67 coronet wagon question

If it's identical to my 68 Coronet rollers or the gears may have something blocking them. You may be able to remove the glass by removing the clips securing the regulator arms to the glass bottom. That is if you can access them in the "up" position. With the glass removed you may be able to see if the lock mechanism is the problem. I have a 68 manual if you need the glass removal steps.