I have another question about the Space Shuttle Ultra. This time I'm asking about how to perform OMS1 and 2 burns to get to orbit. After ET separation, I need to know what to do next. I've read the manuals that come with the addon, and I've read other posts on the forums but I can't figure out why the OMS engines won't fire! I make sure the OMS switches are set to ARM/PRESS. I understand that the data needs to be computed into CRT MFD but that's one thing I can't figure out how to do. How do I enter the data into CRT and then perform the burns?