Never had that, did you see this?:
R12: This resistor is not usually fitted. If a 100k is soldered in this position, the frequency controls will also affect the Q.
From: "dankedout415@... [cgs_synth]" <cgs_synth@yahoogroups.com>
To: cgs_synth@yahoogroups.com
Sent: Wednesday, 18 May 2016, 16:14
Subject: [cgs_synth] cgs112
To: cgs_synth@yahoogroups.com
Sent: Wednesday, 18 May 2016, 16:14
Subject: [cgs_synth] cgs112
Anybody else get this problem?
When the frequency pot is all the way up, It causes the resonance to peak.