I run the overdrive at 12, distortion at 9 midcut off and high cut at around 2 (I am not a fan of cutting mids)
Maybe I am just being picky but there was still some buzz/fizz that was bugging me. Maybe down to the way it interacted with the Tonehammer who knows!
Ok, I hear ya. Running a fairly high output bass (Dingwall Super J @ 18v) I found that at above ~11 o'clock on the OD knob is where I would experience a bit of unwanted artifacting. I found my sweet spot was rolling back the OD a touch and setting the Distortion slightly higher (it's super smooth). With lower output basses I could set both levels even higher before I ran into artifacts.