Pork Barrel only works with oscillioscope probe....

[iampoor]

Hi all

Just finished building a pork barrel, and I have a very peculiar issue...

The LFO works (up until the depth pot)   and the audio path works (checked on my scope). However, I get no chorusing effect unless I place my scope probe on the junction of D1 and D2. When I attach my scope to this junction the effect works fine, but without my probe connected, I just get clean audio straight through the whole effect!

Any ideas?

[iampoor]

Okay, so I have checked all the values in the LFO and they are fine. I havent substituted any parts. I have a hunch that the capacitance of the probe is changing the behavior of the circuit. The probe has a 10m input impedence and a ~13pf capacitance.

[archaos]

Any gut shots, please ?