I have two DirecTV DVRs. One is fine, the guide is complete for many days. But the other, a few days in is almost entirely empty. I reset it and now it has "Upcoming: Blah Blah" for many channels. Is there any way to ensure that the guide is downloading correctly? I like to set recordings in advance and a lot of the channels being messed up isn't helping. I'm assuming it's going to repair but just curious if there's any way to make sure it is working.