The weight and balance section doesn’t have an effect on the skid mirror. It remains installed whether the weight is 0 or 2lbs.
I altered the line in the FM.cfg to have it set to 0 by default and it is removed, but it still doesn’t respond to the W&B selection.
Sometimes you have to enter 00
I’ve found I have to first put a zero after the 2 and then delete the 2, leaving the inserted zero. With this method I can remove it 100% of the time.
The system is buggy. I hope they fix that. If you delete all and enter 00 it works. Not sure why though. Seems random too.