To fit my Clavinova CLP-360 onto the top of the church Yamaha 9' extended grand piano, I removed the stand with the 3 pedal assembly. Years later, I retrieved the stand and took it home. But the 3-pedal assembly had disappeared. I bought a sustain pedal with a 1/4" phono jack, which doesn't fit the 4 (or 6) pin socket. Of course, Yamaha no longer stocks this part, or even the little 4 (or 6) pin plug by itself to solder to my new aftermarket sustain pedal.