I think the issue is that CS is substituting commands for different animations, which is fine. For example, sure enough, when I hit Shift+E 2 the escape door opens. Is there any way to reassign that to the first second passenger door through altering some file? Between being able to use GSX with the second passenger door and having the escape hatch, I would choose the former, since I am such an excellent pilot flying such a well-designed and maintained airplane I have no need for an escape hatch.

I have it sort of fixed, but it's a WIP. I'm not even sure how I did it. There seems to be no clear correlation between GSX's setup and aircraft commands. The biggest problem now is that the fuel truck won't leave until I use the built-in fueler (I assume the F&P) which doesn't quite work the way some progressive fuelers in other third-party a/c work. It's pretty impressive as is--no crashes, passengers boarding, etc. Haven't decided whether I'm buying into it yet. Just using the trial airports.