What you're doing with your guy is similar to the way I've trained (and retrained/refreshed) my guys, and think it works great.
I'm so glad you invested time, money, and effort into Barkley. Good job!! I'm even more glad to hear about the positive results. WOOT!
Kaizen, Japanese for "continuous improvement" or "change for the better," refers to philosophy or practices that focus upon continuous improvement of processes. Kaizen is a daily process of making changes and monitoring results, then adjusting as needed.