Vortex Sound Research

I just installed the upgrade to my Rev2 making it 16 voices. However every few chords I play or on certain patches I am getting a very distinct hiss/buzzing noise. It happens mostly on the right side of the stereo field which is weird, and also seems to happen more often the more velocity the notes have.

Anyone know what may be causing this or how to fix it? Has anyone else upgraded their Rev2?

Also, I recalibrated the oscillators which actually did help a little bit, but the noise is still lingering for the most part.