the board is working fine. I made a crude test jig out of MDF panel. I decided to give a separated control for the solarize fonction. I was fearing for the LT1054 to be noisy but things are very clean. I'm now working on a daughter board to produce a Horizontal VCO (LM13700) and other things to play with (burst, enveloppe). However even as it, the circuit is fun to play.