I recently got a new Casio keyboard. The manual says "CTK-4400, WK-240, WK-245". Not sure exactly which one mine is. This is replacing another keyboard that I had to get rid of because of damage in a move. I hadn't played in six months because it took that long to get another keyboard. So I got the new keyboard recently, and I figured I could just plug in my existing foot pedal and it would work with my new keyboard, but it does not. Can you help? Is something wrong with my new keyboard? Using the sustaining foot pedal is super important to me. Thanks so much for your help! loveplaying