Added "Discovery Channel USA HD" yesterday.
Some channels I cannot find guide data for both SD and HD, and you cannot use the same data on 2 channels. They have to be unique.
HD did Stabilize for 3 days but as of last night, it was back to unwatchable.
If I have to, I will do a workaround or move the SD listings to the HD slot (Once it is working properly)
/kens