If you're "doing Lean" you're probably busy using a number of tools to help in your implementation. Or maybe you're just beginning to learn about 5S, VSM, A3, Kaizen Blitz, blah blah blah. Allow me to save you a lot of heart ache in the long run. While all these tools are intended for helping solve different problems in different situations, they all have the same purpose when used in a team context: to enable thoughtful conversations to occur between team members that otherwise would be difficult or not possible.
It's important as a facilitator to realize whether or not these conversations are taking place. It doesn't matter if the tools were used "correctly" or if you did everything by-the-book. If the conversations are not happening, everyone's time is wasted.
If the tools your team or organization are using are consistently not facilitating productive conversations, stop using them. There is no bonus for using the most expensive, complicated, trendiest, most high-tech tools around. It's actually quite the opposite. Instead, find the easiest way to keep helpful conversations (the kind that lead to improved actions) going and your organization will be better off.