why is it that the SEC and NFL networks, when recorded don't display in full screen? The picture is constricted to about 60% of the screen.

Hey there, user_01e7ed! Thank you so much for taking the time to reach out to us here on the Xfinity Forums. I am sorry to hear about the experience with your recordings with SEC and NFL network. That should certainly not be the case at all. Have you confirmed the display settings on your X1 cable box? You can find the details here.