Shrike launch angle different for station 1

[SlipHavoc]

Shrikes fired from station 1 fly straight in line with the airplane, but Shrikes fired from stations 2, 8, and 9 launch at a significant downward angle.  This is not just a factor of which one is launched first; it seems to always be station 1 that flies straight.  Replay attached.

F-4E Shrike flight path test.trk