Right, just throwing this out there:
[Begin Action 41]
-1,-1,0,0,428,, a
loopstart
3,2,-640,360,20,, AS0D256
Interpolate Blend
3,2,-640,360,10,, AS256D0
Interpolate Blend
3,2,-640,360,0,, AS0D256
try changing this to:
[Begin Action 41]
-1,-1,0,0,428,, a
loopstart
3,2,-640,360,20,, AS0D256
Interpolate Blend
3,2,-640,360,9,, AS256D0
Interpolate Blend
3,2,-640,360,1,, AS0D256