Oscillator as modulation source à la Memorymoog?

Hi there,

I bought the Moog One 16 voice early this year and it is just fantastic. I have to admit the first thing I did was creating a new user space from scratch and really ignore all the presets. I like my stuff a little dry and dirty. All the original presets were drenched in effects and complex modulations IMHO.
Recently I have been studying a lot of Memorymoog videos and of course I am aware they are different synths. Still I am trying to make my M1 sound more like this than what all these original presets sound like.

First thing I managed was to make the oscillators sound a little rougher with the filter routing in series (combined with filter spacing on the SVF) and of course the right gain staging and detuning tricks (using variants).

The next thing I would LOVE to achieve is the kind of “voice modulation” from the MM where OSC3 works as a modulation source. Since the mod matrix doesn’t allow the oscillators as sources I would like to ask you guys here what would be your work around for this?

Thanks in advance!