Yes, I ran into the same thing when I cut a 16 inch hole in the center my hood for the air cleaner!! I ended up having to cut it to 18 to get it to look right. I was told it was normal and due to the steering linkage.
The first digital hijinx
I designed was quite naturally perfect. It was a work of art. Flawless. Sublime. A triumph only equaled by its monumental failure.