I have an Insigna NS-43D240NA16 (firmware revb_20150123_1_03_00). My picture was fine - then suddenly I turned it on one morning now it isn't fitting - it's too large - I honestly did not change anything that I am aware of (no button pushes, Caleb changes, etc). . I've checked the advanced settings and Aspect Ratio is normal (I've tried other aspects with no fix). I've tried overscan off and on with no change. I'm using HDMI3 input for a Spectrum Canle box. Can you help me get my picture to fit my screen?