Hello there, I've been trying to work out this problem for a few weeks now, with no changes. My issue is that when I press the first GP button on my SID minimal CS it works just fine, but the second GP button acts like every other button there is. When I hold it down it activates the shift function, and when I release it toggles the waveform, sync function, and menu page. Every other pin on the DIN chain doesn't respond. I've tried everything from the interconnection test, which showed good valu