Ghost Echo - Oscillation(?)

[mug]

Hey all - I need your help, this thing drives me mad...
Have been over it a dozen times, re-build it measuring every single resistor. Still no luck

EQD Ghost Echo according to this layout: http://guitar-fx-layouts.42897.x6.nabble.com/file/n5620/Ghost_Echo-corrected_SabroLayout.png

As soon as I switch the effect on a strong reverb-like oscillation starts to build up, becomes louder and louder - a bit like if ou max the feedback pot on a delay. Guitar seems to come through a bit, but I'm not sure since it gets loud as hell within a second so I tend to switch it off immediately.

Some pictures:

without components:


complete assembly:


component side:

The TL074CN sits in a 16 pin socket since I ran out of 14s, but the lower legs in the additional row are clipped off.

solder side:


As you can see I used the downmost row to make the Dwell 1 and BTDR 4 connection to ground - but I cannot imagine this could cause the trouble...

The only substitution is 13k instead of 14k...

I checked all the componentes, checked for shorts with the meter, knifed the solder side, 5-times checked the wire connections... problem still remains.

I'm not sure if I should risk to start going over it with the audio probe - wouldn't the inreasing feedback sooner or later kill something?

Voltages:
fresh battery at 9.2 V

BTDR-2H:
1: 5.0    2: 0    3: 5    4: 0    5: 4.6    6: n.c.
I know the brick is ok since it works in another build (Rub A Dub - build especially for this purpose - see how desperate I am? )

TL074 (it's a TL074CN):
1: 4.63    14: 4.63
2: 4.63    13: 4.63
3: 4.63    12: 4.63
4: 9.28    11: 0
5: 4.22    10: 4.63
6: 5.62      9: 4.62
7: 4.62      8: 5.01

PT2399 (Attack Pot at 12:00):
1: 5.0    16: 2.5
2: 2.5    15: 2.5
3: 0.0    14: 2.5
4: 0.0    13: 2.5
5: 3.4    12: 2.5
6: 2.5    11: 2.5
7: 1.9    10: 2.5
8: 1.9      9: 2.5

Both 78L05 (checked the pinout - they deliver 5V so they have to be ok):
I: 9.2   G: 0.0   O: 5.0

Every idea is higly appreciated!

EDIT: well it was late when I wrote the post - it's a Ghost Echo. I'm building an Echo Dream in parallel, so I confused it...

[mug]

Have been over it again but still no luck.

Could someone with a working build have a look at his voltages?
I simply refuse to give up!

[ξεναγος νεκροπολης]

i can't see anything wrong. and your voltages are good. clear the back with a razor, and re-solder where necessary. for example the link next to pin10 of tl072 looks a bit cold.