I have gone through the TRACULA tutorial, and the tracts are pretty odd. I'm wondering if I did something incorrectly, but as far as I can tell, I followed the tutorial step by step. The individuals in question are healthy, no irregularities in the brains. I have attached images of the fmajor and fminor tracts as an example. 

I also attached the configuration file with descriptions of what I'm doing. 

Best

M.Ingvi