Following this tutorial now…
How does the “tuning” get done between 10:57 (out-of-tune harmonics) and about 11:00 (in-tune timbre) ?
The video skips and suddenly, everything sounds great 
around 11:00 he changes the model from “green 1” to “green 5”, and the cable is moved from harmonics to timbre.
green 1 “Virtual-analog synthesis of classic waveforms.”
green 5 “An additive mixture of harmonically-related sine waves.”
see the manual
If you’re going through the Audible Instruments plugin, this may come in handy, if trying to tune the models:
Thank you!