I was thinking of building the 4:1 compressor, but was also interested in the sensitivity mod that some have done for the Afterlife compressor. Since that mod replaced the 47k resistor with a 50k pot and 24k resistor; could you do that same mod for the 4:1 (replacing R12 with a 50k pot and 24k resistor in series)? Or would something else in the schematic mean that the mod would be different for the 4:1?