Rocker arm play

Big Hyd cam
check for stem tip wear and rocker pad
think lash caps to spread out the load
when shiming try to line up the rockers on the tips
what does the tip wear pattern look like when your die the stems and turn the motor over? you want as narrow as possible
throw some adjustable pushrods on it and adjust shaft height till you get narrowest pattern then check against your pushrod length- watch for leaker bleed down or use a solidized lifter--if new lifters use the MAgnum/ AMC style and hollow pushrods to save those pushrod cups in the stock rockers
do the complete mid lift geometry drill- you may need shims under the shafts
not only ok to use with hyd but necessary with a big cam