I recently replaced a Duo 625 with a VIP 722K. I have the receiver in a different room than TV1. I'm using an IR to RF to IR remote extender to control the TV1 output. Most of the time I use the unit in single mode. I have an old UHF pro remote that I'd like to use to control the receiver. The remote channel is 6 for the receiver UHF remote. When I put channel 6 in the remote it doesn't work. The old remote I have is a UHF Pro 8.0. Can I get this to work?