Completed bid work. Built a return Plenum and installed to the unit. Added a return and supply to the upstairs room where it was needed. The room is now getting adequate air and is cooling. The system now has correct return air. Customer also signed up for the home care. we discontinued the supply run that ran into the bonus room. We added a larger supply run to that bonus room. We also added return air to the bonus room because there was no return. The system is now running according to specifications.