I did black Gorilla Nuts once I purchased my 650 at home. I also replaced them on my F150. In the pass I had 2 swell up on me. Whst a PITA to remove. I had to dremel them off. Good luck.
I hear you. I had to do it a few times before I got it on my right. I was getting so pissed off but finally got it.
By the way, does the New FOB FCC number match to your original FOB?
I know there is a YOUTUBE VIDEO on doing it with a F150. I did a 3rd Remote on a few of my cars. It’s pretty easy to do. Just watch the video a few times and you’ll get it. Hope that helps.
This is Awesome. Maybe you can add what State we are from also. Would like to meet up with some of my Mustang Brothers. If you do. I am from New Jersey