Hawk:
What year F350?
Does the cable drop through a hole in the crossmember you made or does it hang over the side of the crossmember?
If it goes through the crossmember how did you get the cable through the hole?
How does the device latch the spare in the "up" position?
Mine is a 2020. They're a similar design for several years, but I wanted one that used the same rod as my truck. If I remember right they changed a little in 2017.
There is no latch. It's held in place automatically when you crank it up. Very solid and does give you the warm and fuzzy that it's not going anywhere.
I cut a notch to allow the cable to go through straight down. See pic below.