I had some time tonight to work on it. We left off with it sitting in the vise cooling down after a second application of brazing. I attempted just to fill up the areas that were damaged. In hindsight I should have put a coating on the entire area where the damage was instead of just in spots. I missed a few spots and didnt get enough in others.
The first set of pics show the braze and then the file work where i removed the heavy stuff. I filed the heavy stuff off and as it got down to a thin coating, I eased up on the file pressure. I was trying to take small bites so not to damage the shaft.