doombutter feedback mod help

[das234]

My doombutter feedback mod is not working.  Everything else on it works fine.  Can someone give me a better idea of how it's supposed to be connected?  I followed guybrush's diagram on biggrigg's wtf thread and wired it up using the 1776 3PDT board but I only get one repeat. 

The diagram seems to show 2 wires going to the center pin on the switch but I only see one wire in the wtf gut pic so I'm thinking I need some clarification.  Seems like a simple thing.  Grr.

[ch1naski]

It should be feeding the output back into the input, with the feedback pot controlling the amount of signal getting out back into the input.
So, sort of splitting the signal, one goes straight out, one back to the input.

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