Taken from the 4 transistor version. Changing the 2.2nf to a 1 or 2uf will result in the right side being completely flat so the pot will then act as a control for the dip. Might be useful as I pretty much hate this tonestack or any tonestack that cuts so much mids. I have not yet tried this in the actual pedal but I will soon. Please comment if you see something wrong.