Electrostatic discharge is rarely happen on goblin380/420, it affect servo movement or FBL system shut down.
The tail belt, tail pulley, front tail pulley act as Van de Graaff accelerator.
For safety, I use copper foil with some CA for electrostatic discharge prevention.
the inside surface of boom is not stable for some sticky material, so I clean it and applied some CA after copper foil attachment.
Safe flying!