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The Scenery you speak of are the work of Ian Warren and you will find this problem aswell with the NZNS scenery as well. There was a answer for this problem from Robin Corn when I find it I will point you to it unless Robin answers first
Believe it has something to do with the Gmax buildings used and that you should remember this scenery was originally designed for FS2002, and wth the impending release of FSX I would doubt that there will be a Rush by Authors to fix problems that have not already been sorted.
The ILS problem at NZWN has been fixed head over to the windowlight Forum at Avsim and use the search feature for past answers.