I feel your pain. I mounted mines on Friday and it took me all of 2 hours to line it up and still ended up needing to file my holes out more for a flat fit. But I got it on and I think it’s fine.Not much going on I turned it around to work on the drivers side and got a little present in the mail today.
Also tried to mount the SS trunk spoiler but after playing with it for about 2 hours mocking it up checking marking the holes and rechecking.
I am afraid to drill a hole and screw it up...........