Why Does Tito Ortiz Hate (or Dislike) Dana White?

They used to be great friends and had a close business and workout relationship from what I know but that soured over some contractual things. Titio being the outspoken kind of nice guy that he is vocalized a lot of this to and through the media as well as at White directly when they would sometimes meet or run into each other. I was surprised to see him as one of the coaches on the Ultimate Fighter because of all this actually. Several years later now with a lot of history between them their relationship is what it is now but it was much different before then.