Tonebender Mk II problems

[graxis]

I built a GGG Tonebender Mk II Ge NPN clone something like 6 years ago, and it's recently developed a bit of a problem.

First, the footswitch is going bad. This could be part of it, but doesn't affect my rig anywhere else (volume/tone/otherwise) whether the pedal is on or off.

The main problem is severe gating/farting when playing the low E string with a lot of attack — but only in the bridge position of my partscaster. The neck humbucker is fine. It also sounds a little dull overall, but no gating or anything strange when using the humbucker. However, rolling the vlume down or turning on my OCD distortion in front of the Tonebender solves all the problems with the bridge position. It absolutely rips and sounds perfect, which leads me to believe there's something preventing it from seeing enough signal at the input? I did take voltage readings at each of the transistors. They seem okay from what I can remember:

Q1 E: 9.21v  B: 0      C: 0
Q2 E: 0.803v B: 0.112v C: 0
Q3 E: 5.65v  B: 0.804v C: 0.668v

Power is from a Voodoo Labs PP+, 9.6v at the jack.

[PRR]

Welcome!

I am looking at https://generalguitargadgets.com/pdf/ggg_tb_m2p_sc_ns.pdf

You at least have E and C mixed-up on transistors.

There is no way any pin of Q1 should be zero. Examine joints R1 R10.