Hair growth

[Narad13]

I am following the Dynamic Hair tut on YouTube but am wanting to grow "hair" on the entire body of a character. because of this I substituted a Surface Force operator for the Speed (Object Center Out) operator used in the tutorial. I figured this would be a good way to get spawned particles moving outward from the face normals of the model. It works but for some reason I have some particles that have a very low velocity, resulting in shorter "hair" strands. Any idea why this would be the case? Is there a better method for this?
Thanks in advance!