Built Twice, Not Working - Rocket Fuzz

[keto]

http://www.geofex.com/PCB_layouts/Layouts/rocket.pdf

Built it twice now.  Really carefully, both times.  Perf board, just like the layout.  I know I have no solder bridges or cold solder joints.

Both times, bypass worked but I got/have absolutely 0 output.  I have a sneaky suspicion that I'm doing something wrong down in the lower right, around the trimmer and 47uF cap.

Here's what I see:  4 way junction of bottom of 47K + left trimmer leg + upper trimmer leg + lower transistor (socket, in this case).  The upper trimmer leg (I'm using a 3-legged trimmer) carries on and joins + of 47uF.  It shows it carrying on up north from there, but to a 'not used' pad, so I have just dead ended the joint at that point.  47uF neg to ground.

The only other thing different than the layout, is I'm not using a battery snap, so my offboard wiring varies slightly.  9v still going to the 10K resistor, just using board ground rather than heading for the input jack at that point.  Also wiring leg 1 of Drive and leg 1 of Volume directly to circuit board ground - that shouldn't be an issue, right?  I do also join Vol 1 to the output jack ground, and the output jack ground to the input jack ground.  Also 3dpdt switch, but I've wired dozens of them and am confident it's right.

I know it's getting power, LED lights up.  Bypass works fine.

[george]

http://www.geofex.com/PCB_layouts/Layouts/rocket.pdf
The only other thing different than the layout, is I'm not using a battery snap, so my offboard wiring varies slightly.  9v still going to the 10K resistor, just using board ground rather than heading for the input jack at that point. 

don't you need the ground to go to the input jack to close the circuit?  You can't just have one wire carrying the signal from the guitar, it has to get back somehow.