That is very cool, and thanks for sharing all the details. The results are a lot more consistent than I’d expect.
If you haven’t already, you might want to post to the Warp9 ESS forum about tuning the delays for those divots. Andrew is very responsive and if there is a way to help with that he would know, and if there is something he can add to the ESS plugin to make it happen he would be the guy to ask as well.