There are supposed to be nuts attached to the inner part of the fender to screw the bolts into to bolt the hinges on. Mine have been knocked out on one side. Does anybody have any ideas about what to use to put the hinges back on? The only thing I can think of, without welding, is using polly wall anchors (they expand outward when bolt is screwed in). The holes where the nuts were are square. Any help is appreciated.