trouble cfs2 scenery in Mission Builder

Help!! I've created some new airports with Leung's Flight Simulator Scenery Creator and installed them to CFS2. The new airfields work fine with Free Flight, but when I added them to Mission Builder (by pasting all the lat/long stuff into airbases.dat), the airplane appears far off the end of the runways for all fields (it does the same thing when I run the mission file in CFS2, even though the airfield works fine in Free Flight). I've checked the lat/long data in airbases.dat file and they all match the coordinates given in Free Flight. I have the takeoff_start_pos set at -400,0 -- I attempted to fix the situation by changing this to 0.0 but it had no effect.
I can't find anything wrong anywhere. Anyone have any idea what might be the problem?

I can't find anything wrong anywhere. Anyone have any idea what might be the problem?
