Hi,
Typically, you need to set your look Ahead value correctly, for example 0.01 which means it's looking very close to itself on the curve which guarantees its looking int he direction it goes, setting hight value is possible ONLY if your path definition is appropriate.
if the distance between two path points is less then 1, and your look ahead is 1, then you have a problem as it looks way to far on the curve.
bye,
Jean