Rocker shaft is worn on the underside. Towards the ends of the shafts the wear is .002 and toward the center the wear is .004. The rockers have cut a groove on the underside only. Do these shafts/rockers require replacement? What will happen if they are used? Valve clatter? Poor oiling?
Suggestions or ideas? If I don't have to replace these, would be nice not too!

Thanks
Dave
1997 Disco Engine