I'm still very much a "n00b" to this AI traffic stuff, so bear with me if this is a silly question.
I'm having something of a problem keeping my airports poulated (mainly the Russian ones). I've successfully downloaded and installed several packages, and every now and then I see some of them sitting on the tarmac, but it seems that my airports always look far too deserted, even after loading them up with AI. For example, I recently installed several packages to populate Surgut (UTAir, Kolavia, and Bashkirian, to name a few), and even though these make up a majority of the airlines operating from that airport, they rarely show up. This same thing occurs with other airlines in other airports. The airlines work fine, as I do see them from time to time, but they're just not filling up the airports like they should.
I've tried tweaking the AFCADs and the planes' cfg files, but nothing helps. Is there something else I need to do to make these airlines appear more often, or is this simply how it's supposed to be?
Apologies for my noobish inquiry, but it's really getting frustrating spending hours setting up AI only to find that they've gone AWOL...