Fulltone Soul Bender (2007 big box) adjusting internal trim pot

Messing around with the internal bias or volume or gain, or whatever the inner trim pot is, on the Big Box Fulltone Soul-Bender, the ultimate Tone Bender, in my opinion... just delicious fuzz from the fuzz master. I used my Squier J Mascis Jazzmaster with JGC Pickups custom wound replacements, and Mojo Tone MT. PILOT 1x12 tube combo amp (6V6 flavored). Wired for sound with Divine Noise white straight a