Cadmium Fuzz - mod for external bias pot?

[skillzmcgavern]

Hello, I am trying to figure out if it's possible to add an external Bias control to the Cadmium Fuzz, and if so, where to put a pot instead of a resistor. I don't quite know where this would be - possibly R7 or R8?

 

[Nostradoomus]

What are you hoping to achieve? A variable voltage/sag kinda knob to get gated sounds etc?

 

[skillzmcgavern]

Yes, exactly, sag kinda thing like on the Sandspur Fuzz with the external control, for example.