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?