Problems with G4 on signal 2

Good evening,
About a year ago I posted a question about having problems receiving G4tv on my second signal..it was only that channel that gave me problems on one of my tivo units. If I changed the channel I would get video in input 2. Then Summer came and never had an issue again..until this Winter. I thought I read something in passing about the cold and the particular dish I have having problems? I am getting a new 3lnb dish installed this week and was wondering if that would fix the issue or if its something else? Basically, at the moment, if I want to record a show on G4 I have to set a season pass for it and also set a manual recording at the same time so one of the feeds always works and the other is always broken up. Just wondering

Thanks