Hey man, don't give up!! I think you may have finally diagnosed the problem, so now you can fix it. See if you can take an emory board nail file and clean it up right where it's messed up at. Patience is the key. Do a little at a time. Take several breaks if that's what it takes. You can do this! And even if it comes to the point of removing a cam, there's plenty of folks on here that can guide you every step of the way. Just keep us posted.