Stock Rocker arms clearances and fit

All,
my updates are below...THX much for the assist...
1) No shims were/are present under the rocker shaft
2) Checked for the noisiest rockers while idling(Got very oily/messy real quick...Used a cardboard shield to keep oil off headers)
3) Order 3 replacement LH and 3 replacement RH rockers and installed them.
4) All of the new rockers had much closer fit on the shaft than what was in-place.(expect one of the RHs for some reason was about the same as the older ones.)
5) running valve noise is MUCHO reduced "except" for the one RH "loose" rocker. (Plan to order another couple replacements and install the best/closest fit RH.)
-Scott