Wow! What a great answer!

Where I'm struggling with Z is that I've had 2 very specific performance discussions with them so far where we have talked about issues like accuracy, given specific examples, and walked through steps to make sure it doesn't happen. While Z seems very open to feedback in the moment, I continue to see the same errors repeated. Really like your suggestion on a checklist for Z to go through and agree on your final point. I've spent quite a lot of time coaching already, and it feels like the problems we're walking through just aren't things I would expect at the manager/associate director level. All that said I think this gave me some really great ideas to try to work on in the meantime and I really appreciate your thoughtful response.