Fresh 302, block was decked, valve train noisy

302 Ford, yes I know sacrilege
Fresh stroker to 347 build
Block was decked, amount unknown
Stock length pushrods, Comp cam hydraulic and lifters, roller rockers ,
Valve train was noisy, adjusted rockers, mostly quiet.
Took it for a drive, valve train noisy again.
I'm aware that too short a pushrods can cause noise. How about ones too long ?
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