Brycetech -- I don't know if this is your problem with the particle fountain, but in C4, you have to adjust the Maximum number of particles and the Frequency to make a continuous stream. Since it 'recycles' the particles, if they are emitted with higher frequency than they die, you'll 'run out' until enough die to start emmitting again, resulting in spurts. This can be a useful for some effects, but not for exhaust and contrails. Try setting the Frequency or Lifetime lower, or the Maximum higher and see if they work. Or maybe it's different in C5 and I'm completely wrong ;-). Good luck!

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