Set my custom guide up with no problems. Last night I noticed that channel 15 had disappeared. I went in to edit my Custom guide and re-check marked Channel 15, hit save checked my guide and Channel 15 was still a no show. So I Went back into the edit guide slot and Channel 15 was no longer check marked. So I repeated the whole process. No luck, Channel 15 was still AWOL. Next step was to go back and try the deselect all option and through the selection process again. Again No channel 15. Next I created a second Custom guide and now channel 15 appears on the 2nd Custom guide. Weird. FYI Channel 15 is either NBC or ABC here in Phoenix.