This morning I received an email with some attached pictures showing some additional rust that was discovered on the rear frame rail.  It was covered by undercoating and not visible, but turned up when a clamp was put on the driver’s side rear frame rail.  This obviously meant there was structural damage that had to be corrected.  Apparently the repair wasn’t a big deal as the first I heard about it was after the repair job was finished.  Below are some pictures showing the damage and the completed repair.