Contour2 box not showing movies full screen

After having to exchange my contour 2 recording box, a lot of commercials and moves are no longer showing full screen like they used to.  Is cox no longer sending a 1080p signal which I have it set to?  I have changed nothing on Sony TV (would not think a new Contour box would do anything with TV settings) and the device setting on Cox is set to default the set up selected as 1080p.

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