So I bought a 60 inch tv and I just recently got wow cable, most of my HD channels fit my full screen but I noticed some of them still don't, they leave two black bars on each side. I asked the technician and he said there wasn't anything he could do but I know there is because my parents SAME tv and cable box does not do this. All in all, how do I make ALL of my channels including non HD fit my entire screen? Please and thank you 😊