Here is the part number for the brass inserts just in case you damage one. 90316-MJ1-000
If you have to put a pliers on the nut to get the screw out, hold it as gently as you can. This is where you might damage the nut. And by damage...it will break into pieces.

This is how I replace the nuts into the fairing;
Put anti-seize on the screw, screw it onto the nut. Put JB Weld on the outside of the nut and in the boss. (I use a toothpick) Push the screw/nut assembly into the boss. Leave it be until the JB Weld cures then you can back out the screw.
When putting the speaker panels back on, just gently snug those screws as they are a "shoulder screw" meaning when it snugs up, it's tight. Over tighten and all the anti-seize in the world won't prevent the same thing from happening again.