Music123 has the Big Muff Russian for 44 bucks. Too sweet to pass on. I seem to prefer the sound (to my ears) of the russian version. However, I don't like at all the sound when the effect is turned off (I use it more for sustain anyway). I am interest in the schematic to mod the pedal to be true bypass. I have found the previous posts explaining a schematic however the image no longer was posted. I understand an indivual by the name of SMASH is likely to have the schematic. Thanks.