Valve train noise

I manged to find much wider rocker shaft hold downs. Im going to adjust side play to .010 - .015. After that Ill redo preload again to 3/4 turn. I measured some side play of up to 0.040 on some so ill do it properly. I did not realise the side play was critical.
Regards
Billy D...
P.S. Is 0.010" sideplay for each pair of rockers? Or 0.010" for each rocker hence 0.020" each pair?
.010 per pair.