Upstairs 8†actuator is stuck, unhooked 24v and 8†damper is not opening. When system is running off of the upstairs thermostat it is freezing up due to improper airflow throughout the air handler cabinet. Unhooked damper and shook actuator, actuator is opening 80% when shaken. Left actuator unhooked from zone board to allow airflow to the upstairs. Mr. Hewell wants to look into getting actuator replaced after wedding. For now he will leave actuator unhooked and manually open and close when needed.