As the LEd's are conected now they are always in and flashing when I distort the sound and i can't hear any difference in the sound beteween the three positions. If I lift out the LED's from the circquit the sound changes dramatically between the positions and even the blue led is flashing. This tells me that the schematic is wrong according to the combinations of the diods and that it must be a on-on-on switch. I have also seen schematics where it's the blue led combination thats always in. Maybe that works?
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