I contacted the building manufacture about the oddly angled upper girders.
The company is going to overnight some brackets that should allow the girders to attach at the right position on the column.
I emptied the giant monstrosity of a box and broke it down to be thrown out.
Now all that remains is the flashing, siding, roofing and trim.
I attached the flashing to the base angle. This will keep water from running into the building.
Now I’m ready for siding.