Reusing lifters

i placed each lifter in the bores without the intake or rocker n pushrods , cranked the engine without sparkplugs , by the 3-4 rotation each lifter would fill with oil then stop turning it over let them stand to find which one stayed pumped up . more all fell . hylift johnson lifters rep said that they needed to seat in the pistons seal on the its bore within the lifter . so you should just run them and that clattering lifters will stop after some time . i said what kind of bs is that , so its the lifter companies issue . but here i'm trying to tell the customer that spent 7k on his 340 driver , that clatter on start up is normal , lol . so there no reason to think quality of there machining is at issue , lol . i've got 20 year old lifters that never clattered once in their life . but this new stuff doesn't hold a candle to usa made stuff .