Hi. I purchased this Onkyo receiver yesterday. At first, I was able to adjust the speaker level calibration. Now, that section is suddenly greyed out. My cable box is connected to the receiver via HDMI cable. On the receiver, via Cable/Sat mode, HDMI pass through is selected. That was the only recent change I noticed after setting up the configuration. Any advice on how to "un-grey" the speaker level calibration section in order to adjust it? Thanks.