I had the same issues removing my clutch wheel and hand wheel. I used a 6" mill file to remove the burrs once the clutch wheel was off, but my burrs were quite visible as the set screw had made some rotations around the shaft, some fine emory paper or wet dry sand paper held about the shaft while it is rotated would do the same thing only more gradually and in a more predictable manner. Thank you for the pictures of the latch spring. interestingly mine appears to be completely unlike that one.