The aftertouch is perfect. I think you nailed that.
The sound is very close. But it suffers from the same thing my own attempts suffer from: it's too nice. Too smooth. Not gritty enough.
I'm not even sure of the right words to describe what's missing...I want to say the recording has a more granular texture to it. Does that make sense? The recording has that almost-bit-reduced-sample nastiness to it.
But this is an awesome base. I can work with this. Thanks so much!
Edit: thinking about this, I think maybe I'm expecting too much from the synth? I probably need to look at creating this sound as a combination of synth + channel strip plugins. I think you've given me an excellent base for this approach. Thanks!