Super bummed. New motor. Bad bearings?

My 1st thought was too tight on clearance. But the pics seem to also show the dreaded tracing/tracks of debris too and some general "grittiness" too. So from what I see, looks like maybe a bit of both. Let's hear from other folks smarter than me.
I thought the same, I just didn't wanna say anything, as there are WAY more really experienced folks here than I