Ah, seems I misspoke when I said magnetism earlier. I meant electrostatics. That discussion will completely refute anything you can show me. What do you refuse to watch it?
Discussion
I made a long comment about it. Maybe you didn't receive the notification.
In relation to electrostatics, the Cavendish experiment does not involve electrically charging the masses.
In the video that I posted you can see that the experimenter does not charge the hanging lead blocks at any moment.