Sustain Pedal with broken action/damper part

[Doug Renz]

I went to tune a Fisher upright piano and the (right) sustain pedal
when depressed would only move the dampers off the strings from the
top note to the middle of the piano, around Key A3.  I took out the
action to see if there was something blocking the bar to move the
damers, b ut I didn't find anything. The metal bar that moves the
dampers only went so far and then there was a break and a second bar
that moved for the middle sustain pedal for the bass strings/ break. 
Can anyone help me to know how to troubleshoot and fix this problem?
Is this a problem with the type of action? Pedal? bar? It was strange.
It's a nice piano, and looks like a new action, just the sustain pedal
was not depressing all of the dampers for the action.

Thanks.
Doug Renz
Rochester, NY