Shift-X may work but it doesn't satisfy the checklist and gives an "x" as opposed to a check mark if I choose to manually pass that step. What a pain...
Bah! Apparently the parking brake was on but the checklist just didnt acknowledge it. I figured it out when I went to take off. I have so many issues/bugs with this game just not doing what it shoud. I still enjoy it so much I don't care.