This document discusses using value stream mapping (VSM) and work-in-process (WIP) analysis with Arena simulation software to improve manufacturing line efficiency and productivity by reducing WIP. It provides background on current WIP problems, presents data on current production levels and WIP, and describes steps to map the current process, identify WIP, and simulate improvements. Recommendations include line balancing, total productive maintenance, layout analysis, building supplier relationships, and using simulation to test improvements without disrupting production. The conclusion states that VSM can effectively identify wastes and Arena simulation allows analyzing processes and testing improvements without line interruptions.