hifi engine

Volume knob for Sansui G-22000

Hello, I'm looking for an original volume knob, actually the Preset Tab dial that goes around the volume knob, for my Sansui G-22000. I feel it is an impossible endeavor, but thought I would ask on this site since it is most likely my best source. I bought the receiver in March and it took a couple weeks to even notice the Preset Tab was missing. It's not the end of the world, but would be nice. Any help is greatly appreciated.