There are nine machines in the automatic lathe section of a certain machine shop. The setup time on an automatic lathe averages 6 hours. The average batch size for parts processed through the section is 90. The average operation time = 8.0 minutes. Under shop rules, an operator can be assigned to run up to three machines. Accordingly, there are three operators in the section for the nine lathes. In addition to the lathe operators, there are two setup workers who perform machine setups exclusively. These setup workers are kept busy the full shift. The section runs one 8hour shift per day, 6 days per week. However, an average of 15% of the production time is lost is lost due to machine breakdowns. Scrap losses are negligible. The production control manager claims that the capacity of the section should be 1836 pieces per week. However, the actual output averages only 1440 units per week. What is the problem? Recommend a solution.