hey what up. . . i have a CTR rear lip on my 99 lx, and it is close enough to the exhaust that the exhaust rattles the lip. it is a pretty annoying noise, but i notice how my rear bumper is sagging just a little. when i pull it up, the noise is gone and the lip is not resting on top of the muffler. i wanna know if its because i missing bolts or what that is making my bumper sag. how do i fix the prob?