T.Henry's VCO Deluxe tuning

[JBaker]

ok, so I tweaked the V/Octave trimpot on the VCO and the DAC calibration pot on
the Paia MIDI-CV8 and the first VCO is in tune...then I trimmed the V/Octave
trimpot on the second VCO so that the two VCO's were in tune (at a single
pitch).  I was hoping to hear a perfectly intoned output from both VCO's for the
entire range of the MIDI keyboard, but no dice.  The second VCO doesn't stay
tempered like the first, so instead of getting that fat dual oscillator sound I
get something vaguely remiscent of looney tunes.  Suggestions??

speedy replies encouraged (senior project due Thursday)

thanks,
Jeff