This is somewhere between a request and a contribution, but here are some pictures of a Zendrive Gold that I took a while ago - I don't know if they'll be useful for tracing a schematic and/or designing a build. Unfortunately, I didn't pull any values from it (sold the pedal a while ago) and couldn't get a great shot of the transistors from what I remember, but I thought this might be useful to someone to get a build up and running.
https://drive.google.com/drive/folders/1shktACEPiGRbfe9lcUC0UBhPlS0lgVnb?usp=sharingThanks!
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