I got one right, par for the course for me. On #7 maybe they do detect wear, or possibly the strike is too weak for them? Left hand and branch are pretty flat. All of them lovely coins.
I get the feeling they just didn't want to give me a 100% submission. Of the two they could have been picky with, I think they chose appropriately. Even though I feel that 66 '82-S is solid. I will have to look at it again when it arrives back here.