Tips & tricks for taking out 71 Dart door window?

How do you take out the bolt under the vet wing behind the small hole? ....my other dart was missing this bolt the last time I took out a side window, so it was not a prob., I used a socket & ratchet on it, seem like right size, went one size smaller, would not fit, so I should of had right size, I turned & turned, but did not seem like it was coming out...& douse it got to come out to take the door window out?