For that nut or bolt you just can't reach to put back on without dropping it.Put a little dab of 3M weatherstrip adhesive ( A.K.A.Gorilla snot) on the tip of your finger then stick the nut or bolt to the tip of your finger and put it on. Clean the Gorilla snot off with solvent ( I use OMNI MS251) OH and by the way the MS251 will make old crusty rubber like front bumper fillers on a Challenger look like brand new.