Blueprint Oscillation Problem

[PangeaDestructor]

I put together the VFE Blueprint project, got it working. If I so much as look at the Echo knob, it sends the effect into pretty extreme oscillation, distorted repeats with each one growing in volume and distortion until I zero the Echo knob or shut off the pedal. Thought it might be a bad PT2399, but I've swapped at least 6 times with no change, so it has to be something on the board. Anyone experienced this or have any idea what could be the cause?

[PangeaDestructor]

Crap, I think I just figured it out. Looks like I accidentally swapped the Time and Echo pots. That would do it.

[PangeaDestructor]

Nevermind, that actually made it worse.

[jimilee]

Without seeing any close up pictures of the back, it sounds like there's either a solder bridge or an incorrect resistor value.