Took the engine apart and this is what I found for damage....

 

I'd use it as long as the grooves are fine.

 

IU would use it as well, the apex seal groove looks a bit off but may be just the pic.

 

Yep. Any damage on the face, just make sure it's flat and smooth. You don't want a high spot or a hot spot.

As a friend of mine said once, any pit or hole in the rotor will quickly be filled with carbon.

Dale