Welcome back to the gemba!
CHAPTER 2: GOLD IN THE FLOW
Follow the flow backwards from delivery back to goods reception and ask yourself at each step where you find parts (or piles in in-trays, lists of e-mails, jobs backlog):
-Why is the flow blocked here?
-Where are we batching to create these blockages?
-What could we do right now to flow faster?
Come up with one specific experiment you can think of to reduce a batch by switching faster from one job to another.