Whenever I try to change the value for RunwayTireGum, it seems to have no effect on the runway. Back when I had 2 runways in my project (1 was closed, only for reference) it would have an effect on that runway but not the main runway that is open. Now, with only one runway in the project, the value seems to have no effect on the runway at all.
With Override Opacity set to 1.000:
With Override Opacity set to 0.000:
Now with testing, it seems that none of the values under Airport Archetype seem to have any effect when changed