My arm was bent and forced off the pin at the top. I found another one and put it in just to have it pop the snap ring off and not work again. I spent a lot of time making spacers to shim the mechanism off the mounts so that the arm would follow the arc that the window made. I put in about 1/2 inch spacer in at one of the three mounting points and it works fine now. I do lube the track on occasion to keep it working. The car just looks better with all of the windows rolled down.

Robert