@gloomyandy
Ok, now (after calibrating it at Z3) it doesn't give the error.
But now it does all 5 loops because it doesn't manage to be consistent. 😬
EDIT: going slower doesn't have problems.
I'll also try to move the coil further away from the extruder.
Then I'll have to understand how to make the scanning without lifting and lowering the bed on every point (just removing the Z-999999 from G30 makes it ignore said command).