Brush Guard shaking! Any fixes?

[TravisM]

Pictures
2nd: Notice the metal bar that is running about 10 degree angle to the frame. I have two of those going to hold the grill guard.

What year is your runner? I just looked and for me to do what youd do I'd need to drill holes in my bumper

 

[MaxLine]

Try adding bushings or washers

 

[SpidermanGeek]

What year is your runner? I just looked and for me to do what youd do I'd need to drill holes in my bumper

His looks like a '96-'98 bumper.