Plaid Preamp Only Works when Bass knob is dimed

pantsco

New member
This is only the 2nd pedal that I’ve built so my troubleshooting skills are weak, and I would appreciate any insight.

The Plaid I built (when engaged) only passes audio when the bass (A1m pot) is between 95-100% and then the pedal works normally. It does crackle when about 90% or so. I tried a replacement pot to same effect.

I’m a little stumped and still learning to read schematics etc so I’m sure it’s something I’m overlooking. Thank you!
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