I was reading the thread this morning and have the same issue on my Vegas 24.1.. So i decided to take off the vent covers. You will notice on the two most forward and back that the channel continues beyond the vent. I looked at the size and thought to take a plastic shim and wedge it in directly after the vent. Additionally, while i was there i shaved the foam to direct the airflow. I noticed a difference once i turned back on the A/C.