How do i go about adjusting the windows since theres is a gap in my windows when i close them and im having a problem they wont go up all the way if the doors are closed. Its a 89 vert.

 

take the associated parts including the window apart and off. then clean everyhting. put it back together nice and tight. its the best way to check if u need further money spent for parts or service. it might even fix it.