spawn airgroups?

[Osprey]

OK I've just found out something interesting. What appears to be happening is that the FMB is spawning in double the number of objects for these fighters, no idea why. I've been running the script and instantly seeing the spawning in fighters thus assumed that it hadn't worked. This time I let it run a little and et voila! upon 60 seconds, the designated time, a NEW group spawned in - this caused the others to explode because they hadn't yet moved off their spawn position!!!

So this is a result, this means that it's a case of getting rid of these initial airgroups in the mission. Has anyone seen this before??? Is this some weird cahcing problem because I can't see a problem in the .mis file.