I have series 5007 and have problem installing digital channels. My cable operator provides 120 digital channels, but after the automatic installation the TV displays only 112. I tried adding the channel manually by inserting the missing frequency (home> channel settings> digital reception test> search) and TV discovered 8 new channels on that frequency. BUT instead of adding them they were inserted on the place of some of the previously installed channels which are now deleted and no longer on the list. How can i solve this?