I installed all of the equipment for my theater on the floor below so that only the speakers and TV are in the main viewing room. I have the output from the Verizon FIOS box fed directly into the receiver. Then the speaker wires feed off from there, as well as the HDMI out to the TV. The issue is that the run to the speakers and the TV is about 35 feet. This is a long HDMI run. The picture quality is great - no issues there. But audio/video sync is not great. My receiver does not have any audio sync correction. Is there an external processor box that allows you to adjust the audio sync over HDMI? Thanks.