Issues with Fuzz Face clone

[SightsSetStudios]

I've built this circuit three times (not because of this issue, but because of pads lifting from constant desoldering) and the issue is the same every time so it has to be something I've wired wrong. Basically, the pedal works fine in bypass mode but when it's switched on it just pops rhythmically. With an audio probe I get guitar up til Q1. After that transistor I get guitar on and off and on, rhythmically with the pop (http://imgur.com/gallery/E0Rw7zA).

Here's the board and schematics I used : http://imgur.com/gallery/ulrgp0A

Here's the front of the board: http://imgur.com/gallery/o7jeSYS

Note: I used a 10k trimmer instead of the 8.2k going to Q2 and I used 2n2222a silicon npn transistors instead of the bc108s.

[SightsSetStudios]

Also, I am only getting 250mV at the 9v plug. If I desolder the leads I get the full 9v. I can't find any shorts in the 9v path. Any ideas?

[SightsSetStudios]

Ended up being the diode. I flipped it and it works now, however my output when the pedal is engaged is super low and sounds warbly, not fuzzy.

[bluebunny]

Welcome to the forum.

The rhythmic popping was most likely your power supply trying to save itself by switching itself off and on, until such time as the short-circuit (mis-oriented diode) disappeared.  Learning opportunity exploited.  Well done. 

Check out the sticky "Debugging" thread and follow the instructions.  Pictures of the top of your PCB would be useful too.