Dr. Boogie Voltage Problem... Help please!

[xXMikeXx]

Hello, finished... Well... almost finished my Dr. Boogie... But I have a problem, there's no sound and I assume it's because for some unknown (to me) reason I'm only getting about 0.7V on the JFET bias. The battery is fine, hardly used and it's got enough juice in it to power the circuit, I've used the 100Ohm resistors and 100K trim pots specified in the schematic, my ground is solid, so I know it's not that... Just the very low voltage across the JFET's is troubling me, I cant seem to figure it out, the traces are fine, the parts are fine, as far as I can tell my soldering is fine... Urgh, I thought it would be a quick build like other things I've done. Adjusting the pots do, next to nothing 

I just cant figure it out, as far as I can tell it should work, but the voltage is just too low and I have no idea why, If anyone can help it'd be very much appreciated!

Thanks,

Mike.

[xXMikeXx]

Never mind, I've fixed it, I stupidly in my rush to finish it put the diode the wrong way round