I actually own one of these from the Dead Pony run, and the other night when I'd run out of solder I traced it. It's essentially a TS-808 clone with a couple of very minor changes. There was a jumper where an extra diode could be for asymmetrical clipping, so I've included room for the extra diode in the layout. Couldn't read the exact type of diodes, but they looked like 1N4148s. Use your favorites or socket and experiment. Also a lot of the capacitors were axial ceramic types, so the below layout reflects that. Here's the schematic I drew up.
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