Hey thanks for the info!
So, here is my plan:
Replace the 33k resistor with a B50K (distortion) pot.
Replace the B10K (sag) pot with a 10k (sag) trimmer.
Since the (sag) controls the amount of voltage to the J201s, I was thinking I'd just adjust the sag trimmer for 6V on the drain of the jfets and call it a day. The sag pot really didn't do enough for me to want to keep it external...
Am I approaching this correctly?
Here is the layout for quick reference: