The insufficient ground problem usually only occurs as a premature trigger as your hand nears the platter when the unit is ungrounded. Simply not putting the hand OVER the jog when you’re in an ungrounded venue and bending should be enough to mitigate it to use the units. The issue with the random flicker appears related to some kind of internal contact issue of the jogs completely unrelated to your power outlet grounding. You might want to try physically reseating the jog in the spindle and see if that helps. Also, make sure you also touch the back grounding screw to see if that improves the situation or not. If it doesn’t, then it’s also not the electrical plug. Obviously make sure the film is off the platter. And lastly, don’t forget to try disabling vinyl mode to see if it goes away. Some people have stutter issues with playback in early firmwares that’s not touch. Hopefully InMusic will lengthen the minimum time the ring goes white in future firmwares so we can better narrow down when this happens and what’s causing it, because sometimes it does flicker too fast quite to see.