For some reason, I have 1 television (out of 3) that is having a reception problem with channels in the 250'ish range, most notably on AMC (254). Most times it just says "searching for signal", sometimes I get it but it is extremely pixelated and unwatchable. I've had my local installer out 3 times...the first time he replaced my HDDVR, because of a loose coax connection on the back. The second time he re-terminated the coax inside the house in the plate in the wall, and the last time re-terminated the coax outside the house. None of these attempts helped. I can get these channels on my other 2 sets without problem. Anyone got any ideas?