i work in a large apartment complex, app. 10 years old, using goodman r-22 heat pumps that have never been pm'd. we have many issues, obviously, but one of the main complaints we get is in the 2 and 3 bedroom units where the living room, dining room and kitchen are cold, but the bedrooms are not. the air handlers are located in a closet in the kitchen and the thermostat is located right under the main living room/dining room vents. other than advising residents to adjust their vents- which is what we've done here from the beginning- is there any way to really fix this?