Hi Mike,
Yes, we have used the Kanban method and it has helped us tremendously. Having Kanban implemented can help control and manage your WIP. If you can control your WIP, your production will increase. We had one particular assembly line that was overloaded and causing a bottleneck in our assembly area. Therefore, we needed to implement Kanban in our proviso assembly lines to let them know when to start and stop certain areas of the assembly line. After the implementation and doing some time studies we were able to decrease the WIP and increase production. We even eliminated overtime.