World Airports 3 KCLT Jetway Problem

A couple of days ago I happened to load a previously saved flight in FS2004 at KCLT and noticed that the animated jetways are jerking back and forth. They didn't do this when I first installed WA3 a few weeks ago! The jetways at KATL, KCVG, KMCI, and KLGA continue to function as they should. So far the only way I've found to stop this is to change the NAV2 radio away from 111.00. Has anyone else experienced this problem? The only thing I can think of that might be causing this problem is that I updated the driver on my Windows XP system GeForce 7600 GS video card a week ago. Is there a fix for this or should I roll back my driver to the previous one? I had been experimenting with different display settings trying to boost the frame rate but restoring things to their previous settings didn't correct the problem...Actually, I've half a mind to take out the 7600 GS card and replace it with the GeForce 6200 OC card it replaced. I got the former only because it has 512mb memory, double that of the latter. I had hoped the new card's added memory would improve the frame rate in FS2004 at least somewhat. Unfortunately, it didn't (that you could tell anyway).