Hi again.

Try reset the midisettings to factory preset on the KN65,
then play a ordinary GM midifile in your software or stright
from the PC to see if it plays and sounds OK.
It maybe the settings on your KN that you've saved earlier who
load at startup?
Worth a try.

Good luck
GJ
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)