I had the same exact problem. Bought myself some Air Wings and had to take the OEM air deflector off to install the “Wings”.
What I did was to just pull the old inserts out. Then, after cutting off the screws that were rusted completely into the brass inserts I bought some #4x32 brass wood inserts from the local hardware store, drilled and tapped them to accept a stainless steel 5mm hex head screw. You’ll have to break down the threads from the inserts but they will tightly fit into the existing plastic on your fairing. Cut the new stainless steel screws down to fit your brass inserts, don’t forget to buy a nut with your screws to protect the threads after you cut the bolt shorter. I used a grinder to shorten my screws, the nut helps to straighten out the threads afterwards. Oh yeah, I also put some anti-seize lube on the screws to prevent having the same thing happening ever again.


Al.