Shift Kit

Little thin strips about an eighth is ok if there isn't too many of them.
Also "covering the pan" may just be because it hasn't been cleaned out in a long time.
It's really hard to tell by someone else's view, but if it works ok I would have to call it a works but needs attention transmission. (since you said "larger pieces")

How thick in the bottom was this stuff?
and how big were the larger pieces?
AND were they flat flake type pieces or chunks?
Were the bigger pieces metal or something else?