Haven't you ever heard the old saying "Sometimes the dummy load is between the microphone and the chair." ![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Where was the mistake at?
well, thats most of the issue.
they have found what caused the "effect", but the "reason" is unclear. it seems to be the tuner/cable/operator, but, exactly WHY isn't known,.... yet.