Comp Xtreme Energy Cam and Magnum Heads

I just got my motor in , 318 +.030 ,KB 167's , Comp XE268H cam , Magnum heads and I have a little valve train noise as well . My preload is .025 . I used a Hughes adjustable push rod and lifter and measured and 7.60 , then purchased the MP pushrods . Hughes said .015-.020 preload was enough .I'm going to run mine and save for a set of Crane Energizers.