So you lost the microphone. Hopefully that will resolve it eventually in any case. In the meantime....
Take a picture of the back of your avr showing your connections, I have never heard of a "middle port" for example. Pics of your screen settings would probably help, too.
One thought, if you have a 5.1 system you only have side surrounds, if that is what you mean by middle ports. Not sure why front and rear speakers would be adjusted together, though, let alone why you couldn't go and adjust those sound levels per speaker (or at least channel) if necessary.