After an extensive day of re-doing someone else's handiwork, I am going back today to finish up (spkr levels, spkr size, spkr distance, VE, etc.) adjustments. However, no manual was available for the Sony receiver, and all optical and the one coaxial input were clearly marked with DVD, Video1, etc. Do you believe that these are hardwired, or should I try and assign them(the cable box only has coax out and it is marked DVD). I know I can just put the inputs in anywhere, but I want them to correspond to the buttons the person is pushing on his remote. Thanks for any input(no pun intended).