Okay, this is not two wheel related, but it does apply to anyone who plays with motorized vehicles and pulls their own engines.  The following pictures are from a borescope on a 2.5L Subaru engine I just had rebuilt by a shop that specializes in Subarus.  It's all they work on, and they have their own machine shop.  The engine has less than 500 miles on it, and I changed the oil and filter for the first time.  I kept it under 4k rpm, and babied it the entire time.  I paid for the engine block to be bored and honed.  For the long block rebuild, I felt I paid a premium, actually.  But I told myself these are specialists, they know what they are doing.

1) where is the cross hatching from the honing?  Very little is visible.

2) why are circumferential boring lines still visible?  These grooves are parallel to the rings.  Not what you want.

3) vertical scoring/scratching already visible

4) metal particulates visible in the drain pan after emptying it.  Cut open the filter, even more captured in the filter element.

a gouge/galling?

That sucks , I would want to open it up for a closer inspection
And be making a list with corresponding pictures in case you got to go to court. But the more stuff you document then builder knows he’s got to make it right.

Trust no one , especially me

I should note that a compression test today showed that the readings are within 9 psi, ranging from 149 to 158 psi.  Consistency is the most important, but those are good, high numbers as well.  Fingers crossed.