I'm designing my first airport using Airport 2.60, and am having a couple of
strange problems:

First, the scenery objects disappear at much less than the max vis distance
they supposedly have (like about 1 mile vice 20 km), and it seems like the
distance lessens even more as I add more objects. This seems like it might be
a memory limitation somewhere. Is there a way to correct it?

Also, my runways have edge and threshold lights even though I selected "none"
when building the runways.

Finally, does anyone know of a good barbed-wire fence out there? Finding none,
I shrank and repainted an antenna black, and built lines of them for fences.
It looks pretty good, but I suspect it might have to do with the first problem
I mentioned (also, I haven't figured out how to keep them from lighting up at
night....).

Thanks in advance for helping out a rookie!