I just got the 622 installed today. I just had about 5 minutes to spend with it before having to head back into the office. I could not get TNTHD or A&E HD to tune in (black screen) within like 20+ seconds and Discovery HD took a long time but finally came in. I guessed A&E and TNT would have come in eventually. Is this normal? Maybe just a "first time tuning" thing? Or not? ??? and yes I did a search and could not find this info.