How many kilometres.....sorry miles / hours on the engine? You will likely not get an out of spec deviation if this is the first instance of particles.
When I had paper oil filters....I found that use of 0W40 yielded quite a few of these particles early in my engine's life....later after switching to 5W40 the number of these particles were reduced.
Driving style could affect this wear. IIRC theses pads are significantly more loaded under 3000 RPM and that this wear condition changes every time the 3K threshold is crossed (early 5-chain motors). There should be plenty of anecdotes from M96 engine experts here.
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