I was doing work on my front bumper and noticed the plastic slides/brackets are no longer staying secured to the chassis. It is causing the bumper to sag near the fenders. I can't get them to stay put. It looks like a small white plastic piece clipped into the chassis is holding the piece. The slider isnt bolted on in any way. Honda discontinued the right side but I can but a new left one. I would like to just get rid of the slider all together and find a way to secure the bumper to the fender. Any tips appreciated. Thanks
it is part 13/14 in the picture

Visual sag

Thats bracket is supposed to be secured