I have a problem with the reception when watching any of the mainstream terrrstrial channels (101 thru 105) through the SKY receiver. The top inch of the picture flickers badly - more noticable on darker pictures. All the rest of the SKY channels are fine and the terrstrial channels are fine through normal cox. Has anyone else had this problem - is the way that SKY are transmitting the channels. I've tried changing SCART lead but it is still the same Any Ideas anyone ?