75 model got around to fooling with the rear glass, only way to get the glass in square is to remove the top drivers side bolt from the regulator. Are all year regulators the same? Maybe someone has changed this one. Anyone ever have one of the lift arms "jump" a tooth? The retainer strap is welded but it really looks to me if one of the arms was "re-timed" to the other it would lift and stay square and the regulator would fit all bolt holes. Thoughts?