As stated in my initial responses it is not an Orbx airport and Orbx has no authorisation to modify a default Laminar airport. There is nothing for Orbx to fix. I strongly recommend you download the copy at the link and this will resolve the issues you have. https://forums.x-plane.org/index.php?/files/file/27786-kmia-miami-international-airport/ It is a good rendition of KMIA