I get next to nothing at the output unless I turn the Ratio to minimum. When I start to turn it up it abruptly cuts off to (almost) dead and I have to turn the level up all the way to hear anything at all. I started probing and the signal dies at the anode of D2. I checked continuity and voltage, getting about 2.5 volts there, so it's not grounding out somewhere. I get signal on the other path up to the Release control, but only to pin 1 if it's set to full CW. I reflowed solder to D2 and R12 but still nothing. As far as I can tell the work looks clean enough to work but maybe someone here can spot something I'm not seeing.