Help with starcraft carrier spell

[frankie11]

ok, all i did was change the model and the duration time and now, they come out all bunched in one spot, they don't follow the carrier and they don't go back in! (no i did not change dur. time to 0 i changed it to 15 seconds)
besides these, my spell works fine....

p.s. i changed it to a unit spell could that be the problem? please tell me how to fix these without changing it back back to a hero spell!