I didn't know about these either. Just ordered 4, thanks! The 1M audio for volume is the only pot in my ODS clones that I'm not entirely happy with the taper on with the 10% CTS or Alphas.
I finally got some J tapers, the small IM ones that "snap in" to a Twin Reissue or something - put them in the 2ndGenHybrid:
"Fender 1 Meg Solid Shaft J Panel Mount Pot For
Amplifiers 0059712000"
Used for Input Volume and OD Level, waiting for one more for the Master
and a 250K CTS from Parts Parts in the USA
"Fender Pot 250K J Taper Solid, 0059713000"
Used for the Mid pot
Unfortunately I made a couple of other changes at the same time so I am not sure of the differences but I am getting much more action before 12:00
and it is pretty well set up with everything at or around noon.
Sounding really good so I am quite happy!