Edit: I just noticed at zoom of .30 I cannot see the taxiway markings but at .40 (Which is too close) I can see the markings. Is this a draw distance issue and how can I fix it? I can see the runway markings and other things, but not the taxiway markings.
This has been discussed many times already on the forum, that's a result of fps optimization, which is made intentionally.
The scenery has been designed to be used at a zoom level from 0.50 to 0.70, because this is what is considered to be the more realistic setting. If we allowed to use any zoom settings, there would be a visible impact on fps.
Since you are reporting it's working from 0.40 onwards, you are still well within (and more) the parameters the scenery has been designed to work with so, just don't use 0.30.