Came out to perform Quality Check on clients brand new 18 seer 2 stage heat pump system, upon arrival performed quality check by checking motors, voltages, amperages, wiring, electrical connections, delta t, refrigerant charge, breakers, seal of equipment, overall cleanliness of install, etc., etc.. while performing QC found that the TXV did need to be adjusted, adjusted TXV to the proper charge. System is now operating at 9.5° sub cooling and 14.8° superheat with a delta T of 19° with the return air temperature at 71° in the supply air temperature at 52°. System is operating per manufacturers specifications.