So I'm trying to put a new visor on my helmet (rbk 6k) and I can't for the life of me remove the screw that secures the side clip. As you can see in this picture, the circular part is not secure so when I try to unscrew it turns with the screw. I tried pliers, multiple screw drivers, but because the piece is so thin nothing I use can get a hold of it. Do you guys think the rust is adding to the problem? Should I try wd-40 or something? I'm out of options, so I come to you, we've got some pretty crafty people here so any help is appreciated.