I think you are close with (0,0.5,0) for the axis in the current parameters for the sim (EDIT: the runs you did were wrong at (0,0,1), but perhaps the vector magnitude of the Axis needs to be normalized to 1 , like the directions in the directions for the Coefficients results need to be (that is a little known fact in itself 
)… (ie 0,1,0 and not 0,0.5,0) … in any case, I would use (0,1,0) because I am so used to normalizing the vector magnitude value for directions
As far as Origin, I did not download and look at CAD file but I assume that the rotation axis in the CAD file runs through (0,0,0)…
Lets wait and see what MRF master @Retsam has to say…