Have been using 2 Model D's with 2 Korg SQ-1's for several months using CV Gate connections. Suddenly, there appears to be but one note generated. I checked all connections, tried several new CV cables, and the same SQ-1's work via CV Gate to my old analog modular synth. The D's work via midi, but with limited functions with the Korgs. And I had left everything set on the last two sequencers I recorded a few days ago- argh!