Hi Tom_CH, I take advantage of the fact that you bought the same model as me and I ask you if with the rear jacks (left+right output and sustain) you have the same impression as me that I described in the thread I attach.
In short, although the contact works correctly, the jacks seem to be only inserted without a constraint and I don't hear that classic click that makes them forcefully positioned.
As a result, extracting the jack requires much less strength to pull out than all the jack connectors I have had the opportunity to try in my life.
Of course I have tried different jacks but this behavior happens with all of them, even with the supplied sustain pedal.
Thank you if you want to give me your feedback!
Best regards from Italy