Originally Posted by E.Marquez

If you had more experience, you would have seen more

I've pulled down many engines, 4 stroke, 2 stroke, auto, truck and motorcycle that had damaged wrist pins / wrist pin bores in the piston due to lack of lube, over heat, oil debris, failed circlips or Teflon buttons.

It's hardly uncommon ... though not common in a serviceable motor that is just worn out.

But hey, you don't trust what I say... so carry on...your just way to educated and experienced to listen to me.