Easyvibe (JH) Ticking

[Lumpy58]

Recently completed this vero build off the FX website.
Works great with all functions, except an LFO tick that I can't seem to solve.  I upped the 10uF cap off pin 8 to 22uF, but no change.  TL072, LM324 also, but no difference.  Would adding a cap somewhere fix this?

[Lumpy58]

Well surprisingly it didn't take long to stumble blindly over a fix.  I poked around with a 2.2nf cap connected to ground on one end, and ended up with reduction of the tick on lug 2 of the depth pot.  Subsequently, I upped the cap values and got it pretty quiet.  Ultimately ended up with a 680 nf cap between lugs 2 and 3 of the depth pot.  There was plenty of room next to the 22k resistor on the bottom left, so I put sockets in for both pins and went with a 680nf for now.  Virtually dead quiet.  I am also using a B250K for the depth, seems to give a nice even range.