Hi Dieter
Perhaps you could make the CV/GATE extension cable (A-100BC) a little longer
I built my 6U from your excellent DIY kit and eventually bought an A-100BC to extend CV and GATE to the 2nd busboard. But I had mounted my two busboards far enough apart in my case that the A-100BC cable was about 3 cm too short.
I extended the A-100BC by soldering in an extension, so all is well. But I thought that the A-100BC could be maybe 50% longer for chumps like me who build their own cases ;-)
Thanks for a great system by the way...loving your new quad VCLFO.