I have the Technics sx KN1400 KN1600 keyboard Reference Guide pdf which has all the midi details you need for deep programming - drum kit note numbers, sound list with program change and bank numbers, effect parameters. Note, this is not the user manual. It is the light blue 64 page A4 booklet . I would love to share it. No idea how to upload it here if someone wants to tell me, I would happily do so.