Totally out of my area of expertise, if I even have an area of expertise, but it seems to me that you have it positioned wrong. The flat points of the bracket should be tapet to the right side of the bow, not to the back of the bow.
That way the metal would not be in as much contact with your fingers.
Of course you may hafe set it in the picture like you have it just to illustrate where you were trying to position it on the riser.