I got the protector mount in today and it came with the longer screws, and also 3 concaved lock washers. The only place I can see these going is under the screw head, however the ears on the washer don't contact the screw head which makes it useless. Am I missing something? The installation instructions don't mention them either. I'm thinking a drop of BLUE loctite, finger snug and calling it good. What does everyone think?