More work. After removing the wheels and turning the rotors by hand one of them is making a distinct clanking sound. I am pretty sure it has to do with rust rubbing against the backing plate but want to make sure I'm not maybe overlooking a failed bearing, The rotor turn smoothly other than the clanging noise. The noise characteristics change after I bang on the backing plate a bit. Both rotors have a slight hiss which I suspect is the pads dragging ever so slightly. Thanks all.