71 dart/scamp window help!

Does anyone know the name of the little clip/guide that keeps the window on its vertical track on the driver side window? the window moves up and down fine but it tilts backwards towards the rear of the car when rolled down. There is a little hole in the window that seemingly should have a guide that rides on a track in it. Just trying to find out what that is called so I can actually find one. Thank you! :tard: