Effects Project: Tonebender MKII (small layout)

I've been wanting to do a Tonebender MKII layout for a while now. At first, I wanted to do a super-mojo big layout for perf and also do PCB on the same setup. But then I thought it would be more fun to try to do one for the 1590A fanatics out there. So I tried to make the layout as small as possible: box caps, tight spacing for the resistors, etc. The layout includes a pulldown resistor on the input (1M) and a LED limiting resistor (4K7). Oh, and it has a pot-controlled bias. And this is a positive-ground circuit.

This is now VERIFIED. And it does fit in a 1590A.

This seems to be a finicky circuit in terms of transistor placement. What I've listed below resulted in a glitch-free, gate-free, awesome sounding over-the-top fuzz tone. There were no unusable parts on the sweeps of the Bias or Attack knobs....well, it's kinda quiet when the Bias is starved to nothing. But other than that, its' smooth, face-ripping fuzz.

Q1 - AC125 - 87 hFE
Q2 - 2N5139 - 58 hFE
Q3 - AC125 - 106 hFE

The AC125s had low leakage (both about 130 micro amps). The 2N5139 is silicon. I doubt that it matters what part numbers you use, but the gains are important. Also, it seems like this thing won't work unless there is a germanium transistor in Q1. ???

And here is the PCB artwork. Print at 166 DPI (305 pixels by 163 pixels) . Board dimensions: 46.5mm x 25mm.

For reference, here's the schematic I used (sans the power filtering cap):
http://fuzzcentral.ssguitar.com/mkII/mkIIschematic.gif