Metal in filter

[Gelbster]

This is too late for the Op but:
I had a somewhat similar situation recently - but way more severe. The quantity of debris was greater.
The entire engine was clean and debris-free because by chance an LN spin- on filter kit had been fitted before the problem started. I have since dismantled the engine completely -down to the very last nut,bolt and O ring. I even dismantled every lifter! No debris anywhere other than the GM filter and in the bottom of the pan and the magnetic sump plug. The engine has 90k miles.
The reason is the LN filter screens 100% of the oil flow.The OEM filter does not. So why don't more of us fit a 100% filter kit +mag drain plug? It is cheap and an easy diy job.The IMS is not the big problem, it is the damage done by the debris that causes the huge expense.