CurrentLover: Mix Control?

[idy]

I am thinking of replacing the "boost' control on my Current Lover with a trimmer (I found the best setting for this) and then adding a mix control. On my deluxe EM moving the mix trimmer to the outside of the box makes it a much more useful effect.

Where would I do this? Add a 10k pot in series with R15?
On the DEM it is 5k on the emitter of Q1, where the Current Lover has a 10k resistor.

It looks like the DEM mix trimmer could have DC on it, but I do not experience crackle when adjusting it. But I did have to readjust the
Feedback trimmer when I put the pot in because the mix trimmer is before the feedback.