Here's a video that shows that something inside the EX800 seems to generate random Pitch Wheel Events.
Those Pitch Wheel Events detune the synth (problem!)
and get sent via Midi also (don't have a big problem with that).
Any ideas?

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2017-09-04 by 4nm6kadee7zdzsxm65oyvgpeyokmlg7czf2bnuoi@...