the center of the model is already set a bit higher..
thus the offset of 24 for hit.z.
I will try any way though...

"down-trace is intermittantly failing", is a better way of describing it.

on a side note how could I possibly do this 2 times per frame?

Everybody Poops.
here are some tutorials I made.
http://www.acknexturk.com/blender/