[Terrydactile]

As mentioned before, I found all of my duct work in terrible condition right from the factory. I pulled all of the registers and taped up the joints. I could not believe how sloppy the workmanship was. There were holes big enough for my to stick five fingers through. Also the ends of the ducts were tapped with some kind of cheap tape that had come loose. I fixed those by fitting a piece of foam pipe insulation up through the last register in the run and wedged it into place. It made a tremendous amount of difference. I would estimate that 1/3 to 1/2 of my cool air was going into the space between the ceiling and roof.

Hope you get this fixed.