#2
Bummer of an update. Tried 'em both, when I ran the first one (active with gain recovery stage) off of the same battery as the overdrive I added it to the volume dropped by half. Not good.
As for the passive one mounted on the pot, I can't seem to get it to fit right in the already cramped RACO electric box I'm using. So I got some questions:
1:Anyone know of any other decent tonestacks?
2:Anyone have schematics/layouts for said tonestacks? Active passive, whatever.
3: Does an active tonestack need its own battery? I don't think so, but there was a huge volume drop when I added it on to the existing battery.

Help!
#3
No shouldnt need an extra batt to run a single transistor. Ive added the BMP style to many pedals never had a huge drop in volume with it. Its usually added right before the volume pot not right before the output jack. There is a tonestac calculator free on the net that will allow you to adjust the caps and resistors. Getting the right caps can make a big difference. Wrong value caps can send to much signal to ground. If you add a switch to the ground for the tone controls you can bypass it to see the difference.
#4
Right before the volume pot, how do you mean? I ran the output of my pedal through it on its way to the jack.
#7
The wire going from the output cap to the volume pot. It usually goes between the cap and the volume pot. Have a look at the original big muff to get an idea.