TXV was wide open at the time this picture was taken.
All heating vents were already checked and aimed away from this case. (Yes, it is an open air single-deck type case)
Not to be a jerk, mccool, but how would low airflow contribute to this problem?
Ok. Time for another hint. It hasn't worked right in a very long time if it ever worked right. Our company didn't install it, but we got saddled with the repairs.