Thanks Charlie. If I am seeing it correctly I do see a bolt that goes through the top of the fender and through the "C" bracket. Can you get one from the side?
Sorry, but there's no view from the side - the plastic tail section hides it. If it weren't such a PITA to remove and reinstall the tail section, I would, to shoot a photo.
The "C" bracket angles towards the rear, the two tabs where the tail section mount are about parallel with the frame rails when it's at the correct angle. Mount it up and angle it back until the seat latches properly and that's where it needs to be.