Univox Superfuzz: Dying battery sound when I turn up the expander?

[chuckfalcon]

Hi everyone!  I just "completed my first breadboard pedal by looking at a schematic and a vintage layout, no breadboard layouts !  Its a Univox Super Fuzz and it sounds FANTASTIC!  However when I turn up the "expander" knob to the max and a little less than max and I play kinda aggressive it sounds like the sputtering dying battery sound.  I really like the way dying battery sounds on a fuzz but I don't want it in this way. 

I've owned an original and it didn't react like this with the dying battery sound so I am guessing that I probably have something wired up wrong.  Any guesses?  I have plugged the output in different areas on the breadboard and it seem to start with the dying battery sound right at the 3rd transistor and still through the rest of the circuit.

Can anyone shed some light on this one for me?  I am so so close!

HERE is the schematic that I used:
http://freestompboxes.org/members/uzzfay/web.archive.org/web/20120313025416/http_/members.fortunecity.com/uzzfay/superfuzz1/usf.html

HERE is the layout diagram that I used:
http://freestompboxes.org/members/uzzfay/web.archive.org/web/20120313025407/http_/members.fortunecity.com/uzzfay/superfuzz1/sfbrdptmk.html

[R.G.]

Turning the expander knob is changing the bias on a transistor stage. Look at the layout and see if you have not put in an electrolytic backwards or shorted across an electrolytic cap.

If it's not obvious from that look, go read and follow "Debugging: what to do when it doesn't work" and do one set of voltages for expander turned down, one for expander turned up.

[chuckfalcon]

Turning the expander knob is changing the bias on a transistor stage. Look at the layout and see if you have not put in an electrolytic backwards or shorted across an electrolytic cap.

Thanks for the quick reply.  I will start with the debugging and checking it out today.  Another thing that I would like to mention, is from the picture of the schematic and the picture of the layout, there looks like there needs to be a 10uf cap on the power rails.  I put one on the rail and then off again, and I made sure it was positioned correctly, however the sound of the circuit doesn't seem to change at all if you take that cap off the power rail.  Perhaps I'm doing it wrong?  I put it at the very beginning of the power rail RIGHT AFTER the battery.