Alright, I've concluded some fairly extensive testing and have determined that the Cornish buffer is the best option I've found to tame the oscillations. I can get gain up to 3 o'clock on this build before it starts whining, which is a huge improvement over what it was, I think it started around 11 o'clock before.
I only ordered a handful of Cornish PCBs to start, can I get a couple volunteers to try them out on your Black Eye build and verify that it helps with the oscillations? Once I've had non-affiliated builders confirm that it helps I will make the boards available to everyone that has a Black Eye board. I only have 4 more boards on hand but I would be happy to send all 4 out there to make sure they work so I feel better ordering 100.