I have a new HR-20 700S. According to the manual I can record up to three shows at once (2 on dish on on Off-Air in). I tried to schedule three shows and it would only let me record two. I called my friendly CSR and was told that I can only record two shows at a time and watch a third on the anntenna. That doesn't work either. It seems that this forum knows more than the CSRs. Is the manual feeding me a line of hooey? Thanks.