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Ok I have some new Intel. I've probed it and found some anomalies. First off, I found I had a whole pack of 100Mresistors labeled 100r, so R19 and 20 were way wrong! But all the same, after changing them out I still lose signal right around there.
I get signal from S to R1, R2,3,C1, R4,C3, Q1, TP1 and TP2, but neither of the other two legs of either trimmer. I have signal at Gain and C6, but around C10 and Q2 the volume drops. I have nothing at Mid or Bass or anywhere further on, so it must be on this side of the board.

I also have voltages.
Supply- 8.98v (wall)
Q1:
D 5.23
S .26-.36
G 0

Q2:
D 5.3
S .22
G 0

Q3:
D 5.29
S .1
G 0

Q4:
D 4.78
S .18
G 0

Q5:
D 4.79
S 6.5
G 8.05

I recognize that those are different from the desired readings, but I'm not savvy enough to know what they mean.
This build will also firmly represent the very last one I make with board mounted pots.

Never. Again.

Thanks for any assistance here. I'll work on pics, though I'm not sure what help they'll be.

Thank you. I see it now, I think. I printed the doc in black and white. Is the audio path the blue or red line?

My calibration went pretty smoothly with one exception: Q1-3 all dialed in easily. But Q4 would jump from 2.xx to 7.xx with imperceptible movements. I finally got it close to 5 in the end, but my Spidey senses are telling me perhaps my issues could be there.

Hey everyone- long time/first time.

I built a Chunk and went to test it tonight. I get bypass but no effect. I'll do the pictures and voltage dance tomorrow, as once it looked failed I went to bed! I was wondering if anyone had a layout of the audio path for this circuit so I could probe it after I double check values and reflow joints. Thanks in advance!