hello, it was my understanding from a lot of posts on here that express pro HD 5.0 could output 24pa footage over firewire to a deck/camera/external monitor without a mojo. I am trying to get playback to work like this but i can only hear my clips, all i see is a black screen. I am reading the avid help files and it tells me to change my "digital cut" output mode but the program won't let me do that. What do i do to get this to work? Thank you