I tried installing a new mesh lower bumper insert and I am unable to get to the back of the studs on the far left or right to get the nut on. I have removed skin off of my finger trying to reach into the little hole that is there. Also the instructions say to drill 5/32 holes in each fog lamp trim for the studs on the insert to go in to. Is there a way to just remove the factory black inserts, install the mesh inserts to them and reinstall. Thanks, skinless in SC