my 1990 caprice eureka has the factory wire wheels(hubcaps). they are held on with a center screw that attatches to a bracket mounted under the lug nuts. I have had lots of rattles and want to replace them but do not know if or what can be done. ive tried other hubcaps and they either wont stay on or fall of in 4 feet of travel. any suggestions? would like regular hubcaps that would stay on.