Debugging a DOD585-A Analog Delay

I've had a DOD585 on my bench staring at me for like two months. A local friend asked me to see if I could fix it and I'm always confidently raring to debug stuff right up until the time comes to disassemble and cook at which point I'm always finding reasons not to start. But now I've started and now I'm mostly finished. The problem was, when the pedal was on, the signal went to zero when you…