Passenger window GOES UP CROOKED and binds in the frame, when helped by hand will go up, but will GO UP TOO FAR.

Happened when driver put window up, and passenger was putting down, a little snap sound. Removing door panel, found a 1/4" x 1/4" x 1/16 white plastic square in door bottom, under the front window channel.

Ay help will be appreciated.

Red Mist

 

I just figured it out, the adjustment nut for the window regulator in the center of the door(an 11mm self locking nut), was loose, and would pull the window crooked when the torgue of the window going up or down would pull that nut up or down, binding the window. One must remove the moisture barrier plastic to see that nut.