Does anyone know whether my 5Lnb dish located in Canada will have any trouble getting the new national HD channels? I am worried that these MPEG4 satellites will be able to be "tuned" more finely to the US boundary and I will lose my existing MPEG2 HD channels when they are switched. So far I am unable to receive any local HD signals, but that could be because of the "phantom" location of my dish (not near the border).