Whats up with these exhaust valves?

I was cleaning up the valves and looking them over to maybe use in a new combo since they had so little run time on them. Wont be using them now. Had a little hydraulic issue with the old motor. I hit water when porting the heads so I epoxied it. From all my internet reading I learned that the ethanol probably softened the epoxy, it let go and leaked some water in the cylinder. Live and learn.