I've been trying to solve this issue caused by the difference in US vs UK mains frequency for over a year, but when it seemed the US 60Hz was literally infecting or haunting my UK equipment it became clear I needed a rethink. So then I thought...
Your early access: https://youtu.be/4AUweTX7NDY
And it's not even Halloween yet!
Your friend in retro, Perifractic