I have my 622 in dual mode with a TV2 feed to my TV1's PIP input. I also have a Home Theater Master MX-850 remote (totally awsome remote BTW) but can't figure out how to change channels on TV2 with my MX-850. It has a UHF output but that doesn't work with dish (as far as i can tell). Can the TV2 be controlled with IR too? Wife will kill me if i have to keep a dish remote sitting around just to change my PIP.