He took the advice from Jonah. The way he improved included many steps. First he increased throughput by getting cash while staying in the plant. He managed to deliver all the overdue orders which also helped him getting rid of the excess inventory which was a natural result of more sales. Secondly he reduced the inventory by changing the production process. The plant produced more of those parts which were in demand or which were overdue instead of those excess parts which were occupying the inventory and slowing down the progress.