Metal in oil

i know that valve springs and dampners wear metal, into engine, i installed pot holder magnets in drainback hole in heads, takes 7 in each head, i no longer have metal in the pan, it cured the problem. when i pull covers off, they are covered with metal, pull and clean them. simple fix. just food for thought. my race engine and my 273 street engine have them in the heads.
Pics of valve train
Looks clean to me
Dual springs ?
Rockers normal ?

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