The really frustrating thing is they are aware of them but appear powerless to eradicate them.
On the outer, it appears they think the tempo they want to bat at is the issue in tests - but it's not. The issue is technical flaws. Too many of them get stuck on the crease, defend with their hands too wide and too square or play around their front pads. These are basic, fundamental mistakes. To the spinning ball, well, defensive techniques are all at sea there, too.
The problem is technique takes time to hone. You won't improve it in game time. In fact, for most you have to go right back to drills and slowly build up to the point that the changes hold up under bowling and then finally under the pressure of quality competition.
This can take months of dedicated and systematic training. There is no way this team will improve their test batting on the back of a few net sessions, couple of warm-up games and then a few nets between tests - but that's all they get.
You'd be an idiot in the modern world to let your ODI and T20 game slip and, let's face it, you'd also be an idiot in this country to focus your attentions on the test game - unless, of course, you want to be one of the financial 'have nots' who give years of service to New Zealand cricket at the highest level and walk away from the game with little other than a record to be proud of.
Enough dedicated time to train and develop the techniques needed to survive at the crease and absorb pressure is the biggest issue facing New Zealand test cricket. Until this technical foundation is established, we will continue to see the current trend continue: occasional success, regular losing.