Help needed; Gravity on straw

Hi guys

I hope im posting in the right place, and that my question makes sense.

As a part of a big project, im trying to simulate a realistic bend om a lot of straws sticking out in all directions. The straw input will be a curve with four control points:

1. start of straw

2. fixed point on straw

3. fixed point on straw

4. end of straw

I hope somebody can tell me why its only comming out in two positions no matter what values are used on the different parameters.

Thanks a lot!